CVE-2026-26223

Name	CVE-2026-26223
Description	SPIP before 4.4.8 allows Cross-Site Scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
spip (PTS)	bullseye	3.2.11-3+deb11u10	vulnerable
	bullseye (security)	3.2.11-3+deb11u7	vulnerable
	trixie	4.4.3+dfsg-1+deb13u1	vulnerable
	forky	4.4.8+dfsg-1	vulnerable
	sid	4.4.9+dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
spip	source	(unstable)	4.4.9+dfsg-1

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