CVE-2026-77140 (GCVE-0-2026-77140)
Vulnerability from cvelistv5 – Published: 2026-08-25 09:00 – Updated: 2026-08-27 17:33
VLAI
EPSS
VEX
Title
Broken Access Control in extension "Telephone Directory" (telephonedirectory)
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:04 UTC
Assigner
TYPO3
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://typo3.org/security/advisory/typo3-ext-sa-… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TYPO3 | Extension "Telephone Directory" |
Affected:
6.0.0 , < 6.2.0
(semver)
Affected: 5.0.0 , < 5.0.1 (semver) Affected: 0 , < 4.1.1 (semver) |
Date Public
2026-08-25 09:00
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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