CVE Catalog

CVE-2026-104070

CriticalCVSS 9.8
Published: Translated: NVD NIST

Summary

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. 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.

Risk Assessment

An unauthenticated attacker can gain full control of the web server, leading to confidentiality, integrity, and availability compromise.

Recommendation

Update the Crayons plugin to version 3.5.0 or later, which includes the fix.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS