Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

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.

TYPO3 Forum是TYPO3组织开源的一款专为 TYPO3 CMS 开发的论坛扩展插件。 TYPO3 Forum 6.2.4之前版本存在授权问题漏洞，该漏洞源于前端主题编辑流程未在服务器端验证请求访客是否拥有正在修改的主题，可能导致攻击者直接提交修改请求覆盖论坛主题内容。

CVSS 8.8 · High EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell

Affected Version Matrix 3

VendorProduct Version RangeStatus
TYPO3 Extension "Forum" 6.0.0< 6.2.4 affected
5.0.0< 5.0.1 affected
< 4.0.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-77143

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

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
Vulnerability Title
TYPO3 Forum 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TYPO3 Forum是TYPO3组织开源的一款专为 TYPO3 CMS 开发的论坛扩展插件。 TYPO3 Forum 6.2.4之前版本存在授权问题漏洞，该漏洞源于前端主题编辑流程未在服务器端验证请求访客是否拥有正在修改的主题，可能导致攻击者直接提交修改请求覆盖论坛主题内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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 Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-77143

请登录查看更多情报信息。

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 &rarr; →

IV. Related Vulnerabilities

Same vendor: TYPO3
Same weakness: CWE-862

V. Comments for CVE-2026-77143

No comments yet

Leave a comment