CVE-2026-72709SPIP < 4.4.18 Missing Authorization via ecrire/action/

Description

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• Researcher Blog technical-descriptionexploit
• Release Notes release-notespatch
• https://www.vulncheck.com/advisories/spip-missing-authorization-via-ecrire-action-editer-auteur third-party-advisory