What’s Vulnerable › Vulnerabilities
CVE-2026-77140: Broken Access Control in extension "Telephone Directory" (telephonedirectory)
- Severity: high (CVSS 8.7 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-25 · updated 2026-09-28
- Weakness: CWE-639
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.
Affected products
- TYPO3 Extension "Telephone Directory": from 6.0.0 before 6.2.0; from 5.0.0 before 5.0.1; before 4.1.1 — fixed in 4.1.1, 5.0.1, 6.2.0
How to fix
Upgrade to a fixed version: TYPO3 Extension "Telephone Directory" 4.1.1, 5.0.1, 6.2.0. Check the vendor advisory for mitigations.
References
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