XSS in Spip Jeux
CVE-2026-27746
The SPIP jeux plugin versions prior to 4.1.1 contain a reflected cross-site scripting (XSS) vulnerability in the pre_propre pipeline. The plugin incorporates untrusted request parameters into HTML output without proper output encoding, allowing attackers to inject arbitrary script content into pages that render a jeux block. When a victim is induced to visit a crafted URL, the injected content is reflected into the response and executed in the victim's browser context.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Spip Jeux — versions 0
Weakness classification (CWE)
References
- chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ (technical-description, Third Party Advisory, exploit)
- blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html (vendor-advisory, Release Notes)
- plugins.spip.net/jeux (Product, product)
- git.spip.net/spip-contrib-extensions/jeux/-/commit/3d240cffb258491acd72f8b37579… (Patch, patch)
- www.vulncheck.com/advisories/spip-jeux-reflected-xss-via-index-parameters (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-27746?
- CVE-2026-27746 is a medium-severity vulnerability in Spip Jeux, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-25.
- How severe is CVE-2026-27746?
- Medium severity. CVSS v3 base score is 6.1 out of 10.