CVE-2026-104070 SPIP Crayons Plugin < 3.5.0 Authorization Bypass RCE
Unauthenticated attackers can bypass authorization in the SPIP Crayons plugin to upload and execute malicious PHP code, leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104070?
CVE-2026-104070 is a critical missing authorization vulnerability in SPIP Crayons Plugin, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Crayons plugin for SPIP before 3.5.0 contains a missing authorization vulnerability that allows unauthenticated attackers to modify arbitrary editable object fields by omitting the secu_ anti-forgery parameter in crayons_store.php, causing the authorization dispatcher to resolve an unconditionally-true handler instead of the proper modification check. Attackers can chain this flaw to write a malicious .html skeleton file, disclose sensitive configuration files containing the site secret, and forge a signed ajax context to execute the uploaded skeleton, achieving arbitrary PHP code execution as the web-server user.
Weakness: CWE-862
Which versions are affected by CVE-2026-104070?
How do I fix CVE-2026-104070?
No fix has been published for CVE-2026-104070 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-104070 being exploited?
There is no known exploitation of CVE-2026-104070 in the wild and no public exploit code.
Sources
Also known as GHSA-7c65-c88q-5jx5.