CVE-2026-72709 SPIP < 4.4.18 Missing Authorization via ecrire/action/
Unauthenticated attackers can bypass authorization checks in SPIP to rewrite administrator passwords and achieve full account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72709?
CVE-2026-72709 is a critical missing authorization vulnerability in SPIP, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-72709?
How do I fix CVE-2026-72709?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-72709 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-72709 exists.
Sources
Also known as DEBIAN-CVE-2026-72709, GHSA-px65-33x4-mwqq, UBUNTU-CVE-2026-72709.