Security Advisory

CVE-2026-77140

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-25 09:00:36

Last updated 2026-08-27 17:33:00

Assigner TYPO3

CVSS score 8.7

State PUBLISHED

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.

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