CVE-2026-72709

SPIP before version 4.4.18 contains a missing authorization vulnerability in sensitive actions under ecrire/action/ that allows unauthenticated attackers to invoke privileged actions by supplying only a valid CSRF nonce without any server-side permission check. Attackers can bypass template-level authorization guards through direct HTTP requests to invoke actions such as editer_auteur, enabling arbitrary account password rewrites including administrator accounts and resulting in full account takeover.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://blog.lexfo.fr/casse-spip-sqli-to-rce.html
https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.html
https://www.vulncheck.com/advisories/spip-missing-authorization-via-ecrire-action-editer-auteur

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 17:18

Updated : 2026-09-15 03:17

NVD link : CVE-2026-72709

Mitre link : CVE-2026-72709

CVE.ORG link : CVE-2026-72709

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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