CVE-2026-77132: TYPO3-CORE-SA-2026-022: Information Disclosure via Backend Localization Wizard

unknown Affects typo3/cms-backend. Feed 2026.10.29.3, updated 2026-10-29; CVE published 2026.

TYPO3-CORE-SA-2026-022: Information Disclosure via Backend Localization Wizard

Package: typo3/cms-backend Composer
Affected versions: >=10.0.0 and <10.4.60 or >=11.0.0 and <11.5.54 or >=12.0.0 and <12.4.49 or >=13.0.0 and <13.4.35 or >=14.0.0 and <14.3.7
Fixed in: 10.4.60, 11.5.54, 12.4.49, 13.4.35, 14.3.7
Severity: unknown
Exploitation: not on CISA KEV · EPSS 0% (36.9th percentile)
Source: friendsofphp

References

https://news.typo3.com/security/advisory/typo3-core-sa-2026-022

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
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Install docs How findings are ranked

Related advisories

CVE-2009-3631 high TYPO3 Backend Command Injection via Shell Metacharacters in Uploaded File Name same package: typo3/cms-backend
CVE-2010-3663 high TYPO3 Arbitrary Code Execution vulnerability on the backend same package: typo3/cms-backend
CVE-2009-3630 medium TYPO3 Backend vulnerable to Frame Hijacking same package: typo3/cms-backend
CVE-2009-3629 low TYPO3 Backend vulnerable to Cross-site Scripting same package: typo3/cms-backend
CVE-2010-3659 medium TYPO3 Cross-site Scripting vulnerability in the extension manager and backend forms same package: typo3/cms-backend
CVE-2010-3664 medium TYPO3 is vulnerable to Information Disclosure on the backend same package: typo3/cms-backend