CVE-2026-77132: TYPO3 CMS

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

It has been discovered that several AJAX routes used for the backend localization wizard failed to perform authorization checks. This allowed authenticated, low-privileged backend users to access information about records and content elements that fall outside of their permitted range. Exploiting this vulnerability requires a low-privileged backend user account. This issue affects TYPO3 CMS versions 10.0.0-10.4.59, 11.0.0-11.5.53, 12.0.0-12.4.48, 13.0.0-13.4.34 and 14.0.0-14.3.6.

Affected products

• TYPO3 TYPO3 CMS: from 10.0.0, before 10.4.60 (fixed in 10.4.60); from 11.0.0, before 11.5.54 (fixed in 11.5.54); from 12.0.0, before 12.4.49 (fixed in 12.4.49); from 13.0.0, before 13.4.35 (fixed in 13.4.35); from 14.0.0, before 14.3.7 (fixed in 14.3.7)

Published 2026-09-08. Last modified 2026-09-08.