CVE-2026-77138CWE-502insecure-deserialization
CVE-2026-77138
published August 25, 2026
What it is
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.
The record
Technical detail
- CVSS
- 9.3 · NONE
- CVSS v4.0
- 9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- EPSS
- 0.00716 · 53.2th percentile
- Weakness
- CWE-502 · Deserialization of Untrusted Data
- Published
- 2026-08-25T13:17Z
References (1)
EPSS history
Timeline