CVE-2026-26345

NameCVE-2026-26345
DescriptionSPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-6155-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
spip (PTS)bullseye3.2.11-3+deb11u10vulnerable
bullseye (security)3.2.11-3+deb11u7vulnerable
trixie4.4.3+dfsg-1+deb13u1vulnerable
trixie (security)4.4.11+dfsg-0+deb13u1fixed
forky, sid4.4.11+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
spipsourcetrixie4.4.11+dfsg-0+deb13u1DSA-6155-1
spipsource(unstable)4.4.9+dfsg-1

Notes

https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html

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