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CVE-2026-77140— Broken Access Control in extension "Telephone Directory" (telephonedirectory)

Quick assessment

Affected
TYPO3 Extension "Telephone Directory"
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 Telephone Directory是TYPO3组织的一款电话目录组件。 TYPO3 Telephone Directory 6.2.0之前版本存在授权问题漏洞，该漏洞源于扩展仅在前端员工编辑链接的渲染操作中验证HMAC，而在持久化操作中未验证，导致未经验证的攻击者可通过直接POST请求覆盖员工记录。

CVSS 8.7 · High EPSS 0.41% · P33

Affected Version Matrix 3

VendorProduct Version RangeStatus
TYPO3 Extension "Telephone Directory" 6.0.0< 6.2.0 affected
5.0.0< 5.0.1 affected
< 4.1.1 affected
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I. Basic Information for CVE-2026-77140

Vulnerability Information
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Vulnerability Title
Broken Access Control in extension "Telephone Directory" (telephonedirectory)
Source: CVE Program / CVE List V5
Vulnerability Description
The extension validates the HMAC of a frontend employee edit link only in the action that renders the edit form, not in the action that persists the change. An unauthenticated visitor who knows the UID of a visible employee record can send a direct POST request to the update action and overwrite that record without a valid edit link or any ownership check.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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 Telephone Directory 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TYPO3 Telephone Directory是TYPO3组织的一款电话目录组件。 TYPO3 Telephone Directory 6.2.0之前版本存在授权问题漏洞，该漏洞源于扩展仅在前端员工编辑链接的渲染操作中验证HMAC，而在持久化操作中未验证，导致未经验证的攻击者可通过直接POST请求覆盖员工记录。
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 "Telephone Directory" 6.0.0 ~ 6.2.0 -

II. Public POCs for CVE-2026-77140

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III. Intelligence Information for CVE-2026-77140

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Vendor Advisories for CVE-2026-77140 (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-2026-77143 8.8 HIGH Broken Access Control in extension "Forum" (pforum)
CVE-2026-77141 8.8 HIGH Broken Access Control in extension "Club Directory" (clubdirectory)
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-2026-77129 7.7 HIGH Server-Side Template Injection in extension "Event management and registration" (sf_event_
CVE-2026-77137 7.7 HIGH SQL Injection in extension "Forms Export" (frp_form_answers)
CVE-2026-56095 7.7 HIGH Insecure Deserialization in extension "Apache Solr for TYPO3 - Enterprise Search" (solr)
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-2026-77140

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