CVE-2026-77806

CVSS 9.8 (critical) · published 2026-08-21

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.

Weakness: CWE-94

Source: NVD CVE-2026-77806

References

• https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-21.html
• https://github.com/rapid7/metasploit-framework/pull/21790
• https://github.com/rapid7/metasploit-framework/pull/21790#issuecomment-5368038123
• https://github.com/rapid7/metasploit-framework/pull/21790/commits/b16eca819abb8f1401f21d115e71e3dfc67b847c

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