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.
8 results
Aug 27, 2026Defender Security: Does not restrict a network-wide setting to network administratorsCVE-2026-19225 · WordPress plugins & themes · reported by WPScanMedium 6.6
The Defender Security WordPress plugin before 6.2.0 does not restrict a network-wide setting to network administrators, allowing an administrator of any single site on a multisite network to execute arbitrary code across the entire network.
- Product
- Defender Security
- Fixed in
- 6.2.0
- What to do
- Update Defender Security to 6.2.0 or newer.
Nov 1, 2024Defender Security: Missing AuthorizationCVE-2024-37444 · WordPress plugins & themes · reported by PatchstackMedium 5.3
Missing Authorization vulnerability in WPMU DEV - Your All-in-One WordPress Platform Defender Security defender-security.This issue affects Defender Security: from n/a through <= 4.7.1.
- Product
- Defender Security
- Affected
- up to 4.7.1
- What to do
- Affects up to 4.7.1. Update Defender Security to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Jun 4, 2024Defender Security: Improper AuthenticationCVE-2023-47189 · WordPress plugins & themes · reported by PatchstackMedium 5.3
Improper Authentication vulnerability in WPMU DEV Defender Security allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Defender Security: from n/a through 4.2.0.
- Product
- Defender Security
- Affected
- up to 4.2.0
- What to do
- Affects up to 4.2.0. Update Defender Security to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordpatchstack.compatchstack.com
May 17, 2024Defender Security: Authentication Bypass by SpoofingCVE-2024-25595 · WordPress plugins & themes · reported by PatchstackMedium 5.3
Authentication Bypass by Spoofing vulnerability in WPMU DEV Defender Security allows Functionality Bypass.This issue affects Defender Security: from n/a through 4.4.1.
- Product
- Defender Security
- Affected
- up to 4.4.1
- What to do
- Affects up to 4.4.1. Update Defender Security to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordpatchstack.compatchstack.com
May 17, 2024Defender Security: Insecure Storage of Sensitive InformationCVE-2022-44581 · WordPress plugins & themes · reported by PatchstackMedium 5
Insecure Storage of Sensitive Information vulnerability in WPMU DEV Defender Security allows : Screen Temporary Files for Sensitive Information.This issue affects Defender Security: from n/a through 3.3.2.
- Product
- Defender Security
- Affected
- up to 3.3.2
- What to do
- Affects up to 3.3.2. Update Defender Security to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordpatchstack.compatchstack.com
Jan 8, 2024Defender Security – Malware Scanner, Login Security & Firewall: Exposure of Sensitive Information to an Unauthorized ActorCVE-2023-51490 · WordPress plugins & themes · reported by PatchstackMedium 5.3
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in WPMU DEV Defender Security – Malware Scanner, Login Security & Firewall.This issue affects Defender Security – Malware Scanner, Login Security & Firewall: from n/a through 4.1.0.
- Product
- Defender Security – Malware Scanner, Login Security & Firewall
- Affected
- up to 4.1.0
- What to do
- Affects up to 4.1.0. Update Defender Security – Malware Scanner, Login Security & Firewall to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordpatchstack.compatchstack.com
Oct 16, 2023Defender Security: Does not prevent redirects to the login page via the auth_redirect WordPress functionCVE-2023-5089 · WordPress plugins & themes · reported by WPScanMedium 5.3
The Defender Security WordPress plugin before 4.1.0 does not prevent redirects to the login page via the auth_redirect WordPress function, allowing an unauthenticated visitor to access the login page, even when the hide login page functionality of the plugin is enabled.
- Product
- Defender Security
- Fixed in
- 4.1.0
- What to do
- Update Defender Security to 4.1.0 or newer.
Full record and what to do →NVD recordwpscan.comsprocketsecurity.com
Jul 12, 2023Defender Security: Cross-Site Request ForgeryCVE-2021-4425 · WordPress plugins & themes · reported by WordfenceMedium 4.3
The Defender Security plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.4.6. This is due to missing or incorrect nonce validation on the verify_otp_login_time() function. This makes it possible for unauthenticated attackers to verify a one time login via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
- Product
- Defender Security
- Affected
- up to 2.4.6
- What to do
- Affects up to 2.4.6. Update Defender Security to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordblog.nintechnet.comblog.nintechnet.com
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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