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.
5 results
May 1, 2025Apache HTTP Server Improper Escaping of Output VulnerabilityCVE-2024-38475 · Websites & servers · Apache · reported by security@apache.orgExploitedCritical 9.1
Apache HTTP Server contains an improper escaping of output vulnerability in mod_rewrite that allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure.
- Product
- HTTP Server
- On CISA’s list since
- May 1, 2025 (federal fix deadline May 22, 2025)
- What to do
- Attackers are using this now. Install Apache’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 recordCISA cataloghttpd.apache.orgsecurity.netapp.com
Dec 1, 2021Apache HTTP Server-Side Request Forgery (SSRF)CVE-2021-40438 · Websites & servers · Apache · reported by security@apache.orgExploitedRansomwareCritical 9
A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.
- Product
- Apache
- On CISA’s list since
- Dec 1, 2021 (federal fix deadline Dec 15, 2021)
- What to do
- Attackers are using this now. Install Apache’s update today (ransomware groups use this one). 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 recordCISA catalogcert-portal.siemens.comhttpd.apache.org
Nov 3, 2021Apache HTTP Server Path Traversal VulnerabilityCVE-2021-42013 · Websites & servers · Apache · reported by security@apache.orgExploitedRansomwareCritical 9.8
Apache HTTP Server contains a path traversal vulnerability that allows an attacker to perform remote code execution if files outside directories configured by Alias-like directives are not under default require all denied or if CGI scripts are enabled. This CVE ID resolves an incomplete patch for CVE-2021-41773.
- Product
- HTTP Server
- On CISA’s list since
- Nov 3, 2021 (federal fix deadline Nov 17, 2021)
- What to do
- Attackers are using this now. Install Apache’s update today (ransomware groups use this one). 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 recordCISA catalogjvn.jppacketstormsecurity.com
Nov 3, 2021Apache HTTP Server Path Traversal VulnerabilityCVE-2021-41773 · Websites & servers · Apache · reported by security@apache.orgExploitedRansomwareCritical 9.8
Apache HTTP Server contains a path traversal vulnerability that allows an attacker to perform remote code execution if files outside directories configured by Alias-like directives are not under default �require all denied� or if CGI scripts are enabled. The original patch issued under this CVE ID is insufficient, please review remediation information under CVE-2021-42013.
- Product
- HTTP Server
- On CISA’s list since
- Nov 3, 2021 (federal fix deadline Nov 17, 2021)
- What to do
- Attackers are using this now. Install Apache’s update today (ransomware groups use this one). 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 recordCISA catalogpacketstormsecurity.compacketstormsecurity.com
Nov 3, 2021Apache HTTP Server Privilege Escalation VulnerabilityCVE-2019-0211 · Websites & servers · Apache · reported by security@apache.orgExploitedHigh 7.8
Apache HTTP Server, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute code with the privileges of the parent process (usually root) by manipulating the scoreboard.
- Product
- HTTP Server
- On CISA’s list since
- Nov 3, 2021 (federal fix deadline May 3, 2022)
- What to do
- Attackers are using this now. Install Apache’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 recordCISA cataloglists.opensuse.orglists.opensuse.org
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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