# TYPO3 cms-form flaw allows security bypass

Published: 2026-10-13 · Severity: routine · Sectors: technology
Canonical: https://vorant.io/reports/68edfb02-5f2a-5e66-9044-5d385ad1bf6d/typo3-cms-form-flaw-allows-security-bypass

> CERT-FR advises a TYPO3 cms-form vulnerability before version 14.3.9 lets attackers bypass security policy; patch available.

CERT-FR issued an advisory regarding a security policy bypass vulnerability affecting the TYPO3 content management system, specifically the typo3/cms-form component in versions prior to 14.3.9. The vulnerability is tracked as CVE-2026-109162 and was disclosed by TYPO3 via GitHub security advisory GHSA-8p4x-mq38-6pg2 on 13 October 2026.

The advisory provides minimal technical detail, classifying the issue as a security policy bypass without further specifics on exploitation vector or in-the-wild activity. No indicators of compromise or evidence of active exploitation are mentioned. Defenders running TYPO3 with the cms-form extension should consult the official TYPO3 security bulletin and apply the patched version (14.3.9 or later) as soon as possible.

## Mentioned in this report

- Vulnerabilities: CVE-2026-109162

Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1296

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