CVE-2026-112067

Captcha Bypass in extension "Accessible Form Captcha" (bw_captcha)

Published Oct 20, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
The extension hides the correct answer to each CAPTCHA inside the image data of the CAPTCHA itself. Anyone who can request a CAPTCHA image can read the answer from it and submit it, so automated clients can pass the challenge. This applies to the default configuration, because the audio feature that causes the answer to be embedded is enabled by default. Forms that rely on the CAPTCHA as their only protection against automated submissions are exposed to abuse by bots.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Typo3
Typo3 extension Accessible Form Captcha
Vendors & Products Typo3
Typo3 extension Accessible Form Captcha
Type Values Removed Values Added
Description The extension hides the correct answer to each CAPTCHA inside the image data of the CAPTCHA itself. Anyone who can request a CAPTCHA image can read the answer from it and submit it, so automated clients can pass the challenge. This applies to the default configuration, because the audio feature that causes the answer to be embedded is enabled by default. Forms that rely on the CAPTCHA as their only protection against automated submissions are exposed to abuse by bots.
Title Captcha Bypass in extension "Accessible Form Captcha" (bw_captcha)
Weaknesses CWE-656
CWE-804
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TYPO3
Published
Updated
Oct 24, 2026, 7:24 AM
Reserved
Oct 18, 2026, 12:08 PM
Status
Deferred
Published
Oct 20, 2026, 10:17 AM
Modified
Oct 20, 2026, 7:28 PM