SB2026091051 - Authentication bypass using an alternate path or channel in CAPTCHA Protected Page module for Drupal
Published: September 10, 2026
Security Bulletin ID
SB2026091051
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Authentication bypass using an alternate path or channel (CVE-ID: CVE-2026-81168)
CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the affected module does not sufficiently validate its CAPTCHA verification cookies. A remote attacker can forge the cookie and bypass CAPTCHA verification entirely.
Remediation
Install update from vendor's website.