CVE-2026-85400

Backend administrators without system maintainer privileges were able to schedule any of the configuration:read, configuration:set, and configuration:show commands. This allowed them to modify arbitrary system configuration, which is normally limited to system maintainers. As a consequence, this allowed them, for example, to gain system maintainer privileges or cause a denial of service. Exploiting this vulnerability requires an administrator-level backend user account. This issue affects TYPO3 CMS versions 14.2.0-14.3.6.

• https://github.com/TYPO3/typo3/commit/b8abe36978c63a0625aee70df078895216e7ee27
• https://github.com/TYPO3/typo3/commit/e15da7ba0218532240578b471152f76c13cb4154
• https://news.typo3.com/security/advisory/typo3-core-sa-2026-023