Updated 2 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,762exploited flaws on CISA’s list

34added in the last 30 days

344new WordPress flaws this week

390,080entries in the database

622 results · page 2 of 13

Sep 8, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-69402 · Email & office · Microsoft · reported by secure@microsoft.comHigh 7.3
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Server Subscription Edition
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Sep 8, 2026Improper access control in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-69282 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Improper access control in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Server Subscription Edition
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Sep 8, 2026Improper access control in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-69273 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Improper access control in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Server Subscription Edition
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Sep 8, 2026Improper access control in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-69268 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Improper access control in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Server Subscription Edition
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to elevate priCVE-2026-70355 · Email & office · Microsoft · reported by secure@microsoft.comHigh 7.3
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Product
Microsoft SharePoint Server 2019
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.CVE-2026-70326 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Product
Microsoft SharePoint Server Subscription Edition
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.CVE-2026-70324 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-70321 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Server Subscription Edition
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform sCVE-2026-70306 · Email & office · Microsoft · reported by secure@microsoft.comCritical 9.3
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-66808 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-66805 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Server Subscription Edition
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-65665 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Server 2019
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-65663 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Microsoft SharePoint Code Injection VulnerabilityCVE-2026-65660 · Email & office · Microsoft · reported by secure@microsoft.comExploitedHigh 8.8
Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network.
Product
SharePoint
On CISA’s list since
Sep 25, 2026 (federal fix deadline Sep 28, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com blog.previdian.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-65658 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-64922 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Missing authentication for critical function in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.CVE-2026-64921 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Missing authentication for critical function in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-64916 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-64902 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-64901 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-64900 · Email & office · Microsoft · reported by secure@microsoft.comHigh 7.3
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-64897 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.CVE-2026-63520 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.1
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.CVE-2026-63516 · Email & office · Microsoft · reported by secure@microsoft.comMedium 6.5
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-63514 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.CVE-2026-63512 · Email & office · Microsoft · reported by secure@microsoft.comMedium 6.5
Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.CVE-2026-62917 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.CVE-2026-62839 · Email & office · Microsoft · reported by secure@microsoft.comMedium 6.5
Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Relative path traversal in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.CVE-2026-62837 · Email & office · Microsoft · reported by secure@microsoft.comMedium 6.5
Relative path traversal in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-62829 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Server 2019
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper authentication in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.CVE-2026-62827 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Improper authentication in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.CVE-2026-58639 · Email & office · Microsoft · reported by secure@microsoft.comMedium 6.5
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 11, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-57105 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Server 2019
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Aug 6, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform sCVE-2026-70332 · Email & office · Microsoft · reported by secure@microsoft.comCritical 9.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Online
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 16, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-62826 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.CVE-2026-58277 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Improper authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.CVE-2026-56157 · Email & office · Microsoft · reported by secure@microsoft.comMedium 5.4
Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-55135 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-55126 · Email & office · Microsoft · reported by secure@microsoft.comHigh 7.3
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.CVE-2026-55052 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.CVE-2026-55051 · Email & office · Microsoft · reported by secure@microsoft.comMedium 6.5
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Microsoft SharePoint Weak Authentication VulnerabilityCVE-2026-55040 · Email & office · Microsoft · reported by secure@microsoft.comExploitedCritical 9.1
Microsoft SharePoint contains a weak authentication vulnerability which allows an unauthorized attacker to bypass a security feature over a network.
Product
SharePoint
On CISA’s list since
Aug 18, 2026 (federal fix deadline Aug 21, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com github.com
Jul 14, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-55034 · Email & office · Microsoft · reported by secure@microsoft.comHigh 7.3
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-55030 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-55021 · Email & office · Microsoft · reported by secure@microsoft.comHigh 7.3
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-55020 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-55019 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoCVE-2026-55016 · Email & office · Microsoft · reported by secure@microsoft.comMedium 4.6
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Jul 14, 2026Microsoft SharePoint Deserialization of Untrusted Data VulnerabilityCVE-2026-58644 · Email & office · Microsoft · reported by secure@microsoft.comExploitedCritical 9.8
Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.
Product
SharePoint
On CISA’s list since
Jul 16, 2026 (federal fix deadline Jul 19, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com cisa.gov
Jul 14, 2026Microsoft SharePoint Server Missing Authentication for Critical Function VulnerabilityCVE-2026-56164 · Email & office · Microsoft · reported by secure@microsoft.comExploitedMedium 5.3
Microsoft SharePoint contains a missing authentication for critical function vulnerability that allows an unauthorized attacker to elevate privileges over a network.
Product
SharePoint Server
On CISA’s list since
Jul 14, 2026 (federal fix deadline Jul 17, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com cisa.gov

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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