TYPO3 CMS patches two confidentiality flaws
ANSSI advises TYPO3 CMS admins to patch two vulnerabilities allowing data confidentiality breach and security policy bypass.
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.
ANSSI (CERT-FR) issued an advisory covering two vulnerabilities in TYPO3, an open-source content management system, affecting the cms-backend and cms-lowlevel components. The flaws allow an attacker to compromise data confidentiality and bypass security policy restrictions. Affected versions span multiple TYPO3 branches: 11.x prior to 11.5.54, 12.x prior to 12.4.49, 13.x prior to 13.4.35, 14.x prior to 14.3.7, cms-backend prior to 10.4.60, and cms-lowlevel prior to 14.3.7.
The issues are tracked as CVE-2026-77132 and CVE-2026-85400, with corresponding GitHub security advisories published by TYPO3 on 8 September 2026. No indication of active exploitation is provided in the advisory. Organizations running TYPO3 CMS should review the vendor's security bulletins and apply the corresponding patched versions as soon as possible to remediate the confidentiality and security-bypass risks.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1131
Free public brief. Slack alerts on the vendors you run come with the paid plans, and a new account gets three days of them, no card.
What this brief leaves out
This page is the free tier: the write-up, the severity, the names. In the app the same report carries live profiles of the CVEs it names. The paid plans add the security research and news reporting the free tier leaves out.
It sits in a corpus of 16,436 reports from 149 sources, 661 of them written in the last seven days, and it grows through the day.
A new account starts with three days of all of it, no card, then keeps the government and CERT reporting free. Slack alerts are a paid-plan feature: name the vendors you run and Slack hears about the reports that touch them, not the rest of the week's. Nothing is charged unless you subscribe.
Create a free account What it costs