{"cvss":9.8,"datePublished":"2026-08-21T14:16:53.903","dateUpdated":"2026-10-15T19:10:00.173","description":"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_resultat_skel.","id":"CVE-2026-77806","raw":{"affected":[{"affectedData":[{"defaultStatus":"unaffected","product":"SPIP","vendor":"SPIP","versions":[{"lessThan":"4.4.21","status":"affected","version":"0","versionType":"semver"}]}],"source":"cve@mitre.org"}],"cveTags":[],"descriptions":[{"lang":"en","value":"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_resultat_skel."},{"lang":"es","value":"SPIP anterior a la versión 4.4.21 permite a atacantes remotos no autenticados ejecutar código arbitrario, según se explotó activamente en agosto de 2026. Esto está relacionado con la inyección de código a través de un encabezado de solicitud HTTP X-Spip-Filtre que es mal manejado por analyse_resultat_skel."}],"id":"CVE-2026-77806","lastModified":"2026-10-15T19:10:00.173","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":5.9,"source":"cve@mitre.org","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-77806","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2026-08-21T17:43:22.719145Z","version":"2.0.3"}}]},"published":"2026-08-21T14:16:53.903","references":[{"source":"cve@mitre.org","url":"https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-21.html"},{"source":"cve@mitre.org","url":"https://github.com/rapid7/metasploit-framework/pull/21790"},{"source":"cve@mitre.org","url":"https://github.com/rapid7/metasploit-framework/pull/21790#issuecomment-5368038123"},{"source":"cve@mitre.org","url":"https://github.com/rapid7/metasploit-framework/pull/21790/commits/b16eca819abb8f1401f21d115e71e3dfc67b847c"}],"sourceIdentifier":"cve@mitre.org","vulnStatus":"Deferred","weaknesses":[{"description":[{"lang":"en","value":"CWE-94"}],"source":"cve@mitre.org","type":"Secondary"}]},"severity":"CRITICAL","source":"nvd","title":"SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in Aug..."}