CVE-2026-85400

TYPO3 CMS - Missing Authorization in lowlevel commands

State: Published
Severity: 7.5 High
Published: Sep 8, 2026
Updated: Sep 8, 2026
Reserved: Sep 3, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.5 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	TYPO3

Weaknesses

CWE-862 Missing Authorization
CWE-266 Incorrect privilege assignment

Affected Products

Product	Versions
TYPO3 CMSTYPO3	14.2.0 to before 14.3.7Affected

References

https://news.typo3.com/security/advisory/typo3-core-sa-2026-023vendor-advisory
Git commit of main branchpatch
Git commit of 14.3 branchpatch

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