CVE-2026-77143— Broken Access Control in extension "Forum" (pforum)
Quick assessment
Affected
TYPO3 Extension "Forum"
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.
前端话题编辑流程未在服务器端验证请求者是否拥有正在修改的话题的所有权。因此，任何知晓公开论坛中某个话题标识符的用户，都可以直接提交对该话题的修改请求，覆盖其原有内容，而应用不会验证请求者是否为该话题的所有者。话题标识符在公开论坛列表中可见，且利用此漏洞无需特殊权限或非常规配置。
Possible ATT&CK Techniques 1 AI
T1059.004 · Unix ShellAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| TYPO3 | Extension "Forum" | < 6.2.4 |
affected |
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I. Basic Information for CVE-2026-77143
Vulnerability Information
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Vulnerability Title
Broken Access Control in extension "Forum" (pforum)
Source: CVE Program / CVE List V5
Vulnerability Description
The frontend topic editing flow does not verify on the server side that the requesting visitor owns the topic being modified. As a result, a visitor who knows the identifier of a topic from the public forum can submit a modified update request for that topic directly and overwrite its content, without the application confirming ownership. Topic identifiers are visible in the public forum listing, and exploitation requires no privileged access or non-default configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| TYPO3 | Extension "Forum" | 6.0.0 ~ 6.2.4 | - |
|
II. Public POCs for CVE-2026-77143
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-77143 (1)
Same Patch Batch · TYPO3 · 2026-08-25 · 24 CVEs total
| CVE-2026-77136 | 9.5 CRITICAL | Server-Side Template Injection in extension "powermail" (powermail) |
| CVE-2026-77138 | 9.3 CRITICAL | Remote Code Execution in extension "HTML5 Video Player vs. Powermail" (html5videoplayer_po |
| CVE-2026-77142 | 8.8 HIGH | Broken Access Control in extension "Industry Directory" (yellowpages2) |
| CVE-2026-77141 | 8.8 HIGH | Broken Access Control in extension "Club Directory" (clubdirectory) |
| CVE-2026-77140 | 8.7 HIGH | Broken Access Control in extension "Telephone Directory" (telephonedirectory) |
| CVE-2026-77146 | 8.3 HIGH | Broken Access Control in extension "femanager" (femanager) |
| CVE-2026-77134 | 8.3 HIGH | Broken Access Control in extension "femanager" (femanager) |
| CVE-2026-77135 | 8.2 HIGH | Information Disclosure in extension "femanager" (femanager) |
| CVE-2026-56095 | 7.7 HIGH | Insecure Deserialization in extension "Apache Solr for TYPO3 - Enterprise Search" (solr) |
| CVE-2026-77137 | 7.7 HIGH | SQL Injection in extension "Forms Export" (frp_form_answers) |
| CVE-2026-77129 | 7.7 HIGH | Server-Side Template Injection in extension "Event management and registration" (sf_event_ |
| CVE-2026-56092 | 7.6 HIGH | Broken Access Control in extension "Apache Solr for TYPO3 - Enterprise Search" (solr) |
| CVE-2026-77144 | 7.1 HIGH | Broken Access Control in extension "Events 2" (events2) |
| CVE-2026-77145 | 7.1 HIGH | Broken Access Control in extension "Events 2" (events2) |
| CVE-2026-56094 | 6.3 MEDIUM | Information Disclosure in extension "Apache Solr for TYPO3 - Enterprise Search" (solr) |
| CVE-2026-56093 | 6.3 MEDIUM | Broken Access Control in extension "Apache Solr for TYPO3 - Enterprise Search" (solr) |
| CVE-2026-56096 | 6.3 MEDIUM | Information Disclosure in extension "Apache Solr for TYPO3 - Enterprise Search" (solr) |
| CVE-2026-77128 | 6.3 MEDIUM | Broken Access Control in extension "Event management and registration" (sf_event_mgt) |
| CVE-2026-77139 | 6.0 MEDIUM | Path Traversal in extension "Mask" (mask) |
| CVE-2026-77127 | 6.0 MEDIUM | Information Disclosure in extension "Modules" (modules) |
Showing top 20 of 24 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: TYPO3
-
CVE-2026-56092
Broken Access Control in extension "Apache Solr for TYPO3 - -
CVE-2026-56093
Broken Access Control in extension "Apache Solr for TYPO3 - -
CVE-2026-56094
Information Disclosure in extension "Apache Solr for TYPO3 - -
CVE-2026-56095
Insecure Deserialization in extension "Apache Solr for TYPO3 -
CVE-2026-56096
Information Disclosure in extension "Apache Solr for TYPO3 -
Same weakness: CWE-862
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