CVE-2026-77806

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-77806
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-21 14:16:53 UTC
Updated2026-08-21 18:16:52 UTC
DescriptionSPIP 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-94 | CWE-94 CWE-94 Improper Control of Generation of Code ('Code Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA SPIP SPIP affected 4.4.21 semver Not specified

References

ReferenceSourceLinkTags
github.com/rapid7/metasploit-framework/pull/21790 [email protected] github.com
github.com/rapid7/metasploit-framework/pull/21790/commits/b16eca819abb8f... [email protected] github.com
github.com/rapid7/metasploit-framework/pull/21790 [email protected] github.com
blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-21.html [email protected] blog.spip.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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