Simple CAPTCHA with Cloudflare Turnstile <= 1.41.0 — Unauthenticated CAPTCHA Bypass
CVE-2026-15239Published · Updated Action summary
Affected: ≤1.41.0Update to 1.42.0 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?
Simple CAPTCHA with Cloudflare Turnstile simple-cloudflare-turnstile
- Affected≤ 1.41.0
- Patched in1.42.0
Update to 1.42.0 or newer.
You are affected if you run ≤ 1.41.0. Version 1.42.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Simple CAPTCHA with Cloudflare Turnstile.
- 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 1.42.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Simple CAPTCHA with Cloudflare Turnstile to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Meher Sudhakar Abbireddi.
The Simple CAPTCHA with Cloudflare Turnstile plugin for WordPress is vulnerable to CAPTCHA Bypass in all versions up to, and including, 1.41.0. This makes it possible for unauthenticated attackers to bypass captcha.
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 Simple CAPTCHA with Cloudflare Turnstile
All 10| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated CAPTCHA Protection Bypass on Login ≤1.44.4Update to 1.44.5 | CVE-2026-119498 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes ≤1.44.3Update to 1.44.4 | CVE-2026-93900 | |
| Medium5.3 | Unauthenticated CAPTCHA Protection Bypass ≤1.44.1Update to 1.44.2 | CVE-2026-57775 | |
| Medium5.3 | Missing Authorization ≤1.44.0Update to 1.44.1 | CVE-2026-39741 | |
| Medium6.5 | Unauthenticated Arbitrary Shortcode Execution ≤1.42.1Update to 1.42.3 | CVE-2026-85116 |
- Medium5.3Unauthenticated CAPTCHA Protection Bypass on Login
≤1.44.4Update to 1.44.5
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
≤1.44.3Update to 1.44.4
- Medium5.3Unauthenticated CAPTCHA Protection Bypass
≤1.44.1Update to 1.44.2
- Medium5.3Missing Authorization
≤1.44.0Update to 1.44.1
- Medium6.5Unauthenticated Arbitrary Shortcode Execution
≤1.42.1Update to 1.42.3
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. 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.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.