SB20261021110 - Reliance on Security Through Obscurity in Accessible Form Captcha extension for TYPO3
Published: October 21, 2026
Security Bulletin ID
SB20261021110
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Reliance on Security Through Obscurity (CVE-ID: CVE-2026-112067)
CWE-ID: CWE-656 - Reliance on Security Through Obscurity
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to embedding the correct CAPTCHA answer directly inside the image data in the default configuration. A remote attacker can request a CAPTCHA image and read the answer from it and submit it.
Remediation
Install update from vendor's website.