{"id":"CVE-2026-77138","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-77138","summary":"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…","details":"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.","published":"2026-08-25T09:17:34.497","modified":"2026-08-26T17:13:53.420","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://typo3.org/security/advisory/typo3-ext-sa-2026-014"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-26T17:13:53.420"}}