CRITICAL 9.3 NVD

CVE-2026-77138

The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize(). A remote, unauthenticated attacke

The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize(). A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server.

References

https://typo3.org/security/advisory/typo3-ext-sa-2026-014

Published: 2026-08-25 · Source: NVD · Feed updated: 2026-08-25

This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-08-25 via NVD.

Risk Timeline

CVE Disclosed2026-08-25 · -1 days ago

Remediation Resources

Official Advisory

typo3.org/security/advisory/typo3-ext-sa-2026-014

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