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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.

PUBLISHED Reserved 2026-02-23 | Published 2026-02-25 | Updated 2026-02-26 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Product status

Default status
unaffected

Any version before 4.1.1
affected

Credits

Valentin Lobstein (Chocapikk) finder

VulnCheck coordinator

References

chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ technical-description exploit

blog.spip.net/...jour-de-securite-sortie-de-SPIP-4-4-10.html vendor-advisory

plugins.spip.net/jeux product

git.spip.net/...mit/3d240cffb258491acd72f8b37579e8a7417740ff patch

www.vulncheck.com/...jeux-reflected-xss-via-index-parameters third-party-advisory

cve.org (CVE-2026-27746)

nvd.nist.gov (CVE-2026-27746)

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