CVE-2026-77806

CriticalCVSS 9.8/10Last modified Oct 15, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Aug 21, 2026
Last modified
Oct 15, 2026
NVD status
Deferred

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CVE-2026-77806: Critical severity, CVSS 9.8 | Vulnix