CVE-2026-104070SPIP Crayons Plugin < 3.5.0 Authorization Bypass RCE
Updated under an hour ago ()
Does this affect you?
It affects SPIP Crayons Plugin. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.57%, higher than 46% of scored CVEs.
Do this next
Free account, 1 product
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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.57% (percentile 46)
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 9, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
SPIP SPIP Crayons Plugin spip:crayons_plugin (from the name) | before 3.5.0 | CNA record |
References
- https://blog.spip.net/Mises-a-jour-de-securite-critique-plugins-Crayons-et-Simplog.html?lang=frvendor-advisory, patch
- https://plugins.spip.net/crayons.html?lang=frproduct
- https://www.vulncheck.com/advisories/spip-crayons-plugin-authorization-bypass-rcethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.