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CVE-2026-112067— Captcha Bypass in extension "Accessible Form Captcha" (bw_captcha)

Quick assessment

Affected
TYPO3 Extension "Accessible Form Captcha"
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

该扩展程序将每个验证码的正确答案隐藏在验证码图像数据本身中。任何能够请求验证码图像的人都可以从中读取答案并提交，从而使自动化客户端能够绕过验证挑战。此问题存在于默认配置中，因为导致答案被嵌入的音频功能默认处于启用状态。因此，仅依赖该验证码作为防止自动化提交唯一保护措施的表单，极易遭受机器人滥用。

CVSS 6.9 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-112067

Vulnerability Information
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Vulnerability Title
Captcha Bypass in extension "Accessible Form Captcha" (bw_captcha)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
可猜测的验证码
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TYPO3 Extension "Accessible Form Captcha" 4.0.0 ~ 5.4.2 -

II. Public POCs for CVE-2026-112067

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III. Intelligence Information for CVE-2026-112067

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Other References for CVE-2026-112067 (1)

Same Patch Batch · TYPO3 · 2026-10-20 · 15 CVEs total

CVE-2026-112238 8.7 HIGH SQL Injection in extension "File manager" (ameos_filemanager)
CVE-2026-112239 7.2 HIGH Broken Access Control in extension "TYPO3 AI Integration Extension" (ns_t3ai)
CVE-2026-112064 7.1 HIGH SQL Injection in extension "sgalinski Cookie Consent" (sg_cookie_optin)
CVE-2026-112066 7.1 HIGH Missing Authorization in extension "sgalinski Cookie Consent" (sg_cookie_optin)
CVE-2026-113459 7.1 HIGH Sensitive Data Exposure in extension "TYPO3 AI Integration Extension" (ns_t3ai)
CVE-2026-112071 6.9 MEDIUM Broken Access Control in extension "TYPO3 Shop by coding.ms" (shop)
CVE-2026-112237 6.9 MEDIUM Server-Side Request Forgery in extension "Kitodo.Presentation" (dlf)
CVE-2026-113468 6.9 MEDIUM Broken Access Control in extension "TYPO3 Shop by coding.ms" (shop)
CVE-2026-112240 6.3 MEDIUM Broken Access Control in extension "TYPO3 Fluid-Form by coding.ms" (fluid_form)
CVE-2026-112069 6.3 MEDIUM Broken Access Control in extension "FAL Protect" (fal_protect)
CVE-2026-112070 5.3 MEDIUM Broken Access Control in extension "Analytics" (analytics)
CVE-2026-112065 5.3 MEDIUM Missing Authorization in extension "sgalinski Cookie Consent" (sg_cookie_optin)
CVE-2026-112068 5.3 MEDIUM Insecure Direct Object Reference in extension "Analytics" (analytics)
CVE-2026-113442 5.3 MEDIUM Cross-Site Scripting in extension "TYPO3 Fluid-Form by coding.ms" (fluid_form)

IV. Related Vulnerabilities

Same vendor: TYPO3
Same weakness: CWE-804

V. Comments for CVE-2026-112067

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