Description
An uncaught exception in the Bookmark Toolbar of TYPO3 CMS versions 11.0.0–11.5.47, 12.0.0–12.4.36, and 13.0.0–13.4.17 lets administrator‑level backend users trigger a denial‑of‑service condition in the backend user interface by saving manipulated data in the bookmark toolbar.
Problem types
Product status
11.0.0 (semver) before 11.5.48
12.0.0 (semver) before 12.4.37
13.0.0 (semver) before 13.4.18
Credits
Jakub Świes
Oliver Hader
References
typo3.org/security/advisory/typo3-core-sa-2025-018