Vulnerability · Published Feb 25, 2026 · Assigned by VulnCheck

CVE-2026-27746SPIP jeux < 4.1.1 Reflected XSS via index Parameters

Medium 6.1

In plain English

A medium-severity cross-site scripting in jeux from SPIP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.2%top 84.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
SPIP	jeux	0 – before 4.1.1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ technical-description, exploit
https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html vendor-advisory
https://plugins.spip.net/jeux product
https://git.spip.net/spip-contrib-extensions/jeux/-/commit/3d240cffb258491acd72f8b37579e8a7417740ff patch
https://www.vulncheck.com/advisories/spip-jeux-reflected-xss-via-index-parameters third-party-advisory