CVE-2026-77806
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-94 |
| Vendor | spip |
| Product | spip |
| Published | Aug 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
SPIP / SPIP
0 < 4.4.21
References
github.com: https://github.com/rapid7/metasploit-framework/pull/21790 github.com: https://github.com/rapid7/metasploit-framework/pull/21790#issuecomment-5368038123 blog.spip.net: https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-21.html github.com: https://github.com/rapid7/metasploit-framework/pull/21790/commits/b16eca819abb8f1401f21d115e71e3dfc67b847c