{"id":"CVE-2026-77806","title":"SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026","summary":"SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to code injection via an X-Spip-Filtre HTTP request header that is mishandled by analyse_resul…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-94"],"published":"2026-08-21","updated":"2026-09-08","sourceUpdated":"2026-09-08T19:29:09.680","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77806","references":[{"url":"https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-21.html","label":"cve@mitre.org"},{"url":"https://github.com/rapid7/metasploit-framework/pull/21790","label":"cve@mitre.org"},{"url":"https://github.com/rapid7/metasploit-framework/pull/21790#issuecomment-5368038123","label":"cve@mitre.org"},{"url":"https://github.com/rapid7/metasploit-framework/pull/21790/commits/b16eca819abb8f1401f21d115e71e3dfc67b847c","label":"cve@mitre.org"}],"tags":["nvd","in-the-wild","exploit-available"],"epss":0.04201,"epssPercentile":0.90535,"exploited":true,"exploits":{"github":1,"githubRepos":["https://github.com/CuteeCat/CVE-2026-77806"],"nuclei":["CVE-2026-77806"],"checkedAt":"2026-09-21T15:30:43.054Z"},"exploitAvailable":true,"ingestedAt":"2026-09-08T20:10:03.158Z","slug":"CVE-2026-77806","body":"## Overview\n\nSPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to code injection via an X-Spip-Filtre HTTP request header that is mishandled by analyse_resultat_skel.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":73,"depthScoreParts":{"impact":53.9,"likelihood":0.8,"exploitation":18,"ransomware":0},"changes":[]}