CVE-2026-77806 PUBLISHED

Assigner: mitre
Reserved: 21.08.2026 Published: 21.08.2026 Updated: 21.08.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	SPIP
Product	SPIP
Versions	Default: unaffected affected from 0 to 4.4.21 (excl.)

References

https://github.com/rapid7/metasploit-framework/pull/21790
https://github.com/rapid7/metasploit-framework/pull/21790#issuecomment-5368038123
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/commits/b16eca819abb8f1401f21d115e71e3dfc67b847c

Problem Types

CWE-94 Improper Control of Generation of Code ('Code Injection') CWE