WordPress plugin
Captcha <= 3.8.1 — Captcha Bypass
a3c5d4ed-7a17-4158-b039-322f729dbddePublished · Updated Action summary
Affected: ≤3.8.1Update to 3.8.2 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-804 Guessable CAPTCHA
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Captcha captcha
- Affected≤ 3.8.1
- Patched in3.8.2
Update to 3.8.2 or newer.
You are affected if you run ≤ 3.8.1. Version 3.8.2 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Captcha.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 3.8.2, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Captcha to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to cervoise.
The Captcha plugin for WordPress is vulnerable to captcha bypass in versions up to, and including, 3.8.1.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Captcha
All 3| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Critical9.6 | 4.4.4 - Plugin Backdoor 4.3.6 – 4.4.4Update to 4.4.5 | — | |
| Medium6.1 | Reflected Cross-Site Scripting <4.3.0Update to 4.3.0 | — |
- Critical9.64.4.4 - Plugin Backdoor
4.3.6 – 4.4.4Update to 4.4.5
- Medium6.1Reflected Cross-Site Scripting
<4.3.0Update to 4.3.0
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.