CVE-2026-104070
SPIP Crayons Plugin < 3.5.0 Authorization Bypass RCE
- State
- Published
- Severity
- 9.3 Critical
- Published
- Oct 6, 2026
- Updated
- Oct 9, 2026
- Reserved
- Oct 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
SPIP Crayons PluginSPIP |
|
References
- SPIP Advisoryvendor-advisorypatch
- Download Pageproduct
- https://www.vulncheck.com/advisories/spip-crayons-plugin-authorization-bypass-rcethird-party-advisory
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