TYPO3 patches security bypass flaws
TYPO3 CMS versions before 13.4.34 and 14.3.6 contain vulnerabilities allowing attackers to bypass security policy controls.
Sourcecert.ssi.gouv.fr — open the original
What to check
- Applies to
- The 2 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
The French national cybersecurity agency (ANSSI/CERT-FR) published an advisory covering multiple vulnerabilities in TYPO3, an open-source content management system, affecting versions 13.x prior to 13.4.34 and 14.x prior to 14.3.6. The flaws allow an attacker to bypass security policy protections, though no active exploitation is mentioned in the advisory.
Two CVEs are tracked (CVE-2026-15305 and CVE-2026-19418), corresponding to GitHub Security Advisories GHSA-68jx-f42c-7599 and GHSA-mfqj-cqv3-h7xw published by the TYPO3 project on 17 August 2026. Administrators running affected TYPO3 versions should apply the vendor-provided patches referenced in the official security bulletins to remediate the security policy bypass issues.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1036
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