CVE-2026-77132: CWE-862 Missing Authorization in TYPO3 TYPO3 CMS
Description
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.
CVSS v4.0
Score 5.3medium
Affected software
TYPO3
TYPO3 CMS
pkg:composer/typo3/cms-backendRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Several AJAX routes in the TYPO3 CMS backend localization wizard lack authorization checks, enabling authenticated low-privileged backend users to access information about records and content elements outside their permitted range. This vulnerability affects TYPO3 CMS versions 10.0.0 through 10.4.59, 11.0.0 through 11.5.53, 12.0.0 through 12.4.48, 13.0.0 through 13.4.34, and 14.0.0 through 14.3.6. Exploitation requires a low-privileged backend user account. The CVSS 4.0 base score is 5.3, reflecting a medium severity impact with network attack vector, low attack complexity, and no user interaction required.
Potential Impact
An authenticated backend user with low privileges can access information about records and content elements beyond their authorized permissions. This could lead to unauthorized information disclosure within the TYPO3 CMS backend environment. There is no indication of privilege escalation or remote code execution from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict backend user access to trusted personnel only and monitor for unusual access patterns related to the localization wizard AJAX routes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TYPO3
- Date Reserved
- 2026-08-20T13:10:12.062Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9fd766acd9273b49698aa5
Added to database: 09/08/2026, 09:37:42 UTC
Last enriched: 09/08/2026, 09:52:46 UTC
Last updated: 10/22/2026, 01:15:26 UTC
Views: 82
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