Captcha Code <= 3.32 — Unauthenticated Login Captcha Protection Bypass
CVE-2026-94457Published · Updated Action summary
Affected: ≤3.32Update to 3.33 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)
- 0.2% chance in 30 days15th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Captcha Code captcha-code-authentication
- Affected≤ 3.32
- Patched in3.33
Update to 3.33 or newer.
You are affected if you run ≤ 3.32. Version 3.33 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 Code.
- 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 3.33, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Captcha Code to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Lê Gia Khôi (KLg).
The Captcha Code plugin for WordPress is vulnerable to Bypass Vulnerability in all versions up to, and including, 3.32. This is due to use of the login_redirect filter to enforce captcha validation after authentication succeeds rather than the authenticate filter, allowing authentication to complete before the captcha check could block access. This makes it possible for unauthenticated attackers to bypass the login form captcha and authenticate without solving the challenge, enabling brute-force or unauthorized access to user accounts.
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 Code
All 3| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Captcha Bypass ≤2.9Update to 3.0 | CVE-2023-48745 | |
| High8.8 | Cross-Site Request Forgery to Plugin Settings Update ≤2.7Update to 2.8 | CVE-2022-37411 |
- Medium5.3Captcha Bypass
≤2.9Update to 3.0
- High8.8Cross-Site Request Forgery to Plugin Settings Update
≤2.7Update to 2.8
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.