CVE-2026-54433

Name	CVE-2026-54433
Description	In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click).
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)
References	DSA-6391-1
Debian Bugs	1141495

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
roundcube (PTS)	bullseye	1.4.15+dfsg.1-1+deb11u4	vulnerable
	bullseye (security)	1.4.15+dfsg.1-1+deb11u9	vulnerable
	bookworm, bookworm (security)	1.6.5+dfsg-1+deb12u9	vulnerable
	trixie	1.6.16+dfsg-0+deb13u1	vulnerable
	trixie (security)	1.6.17+dfsg-0+deb13u1	fixed
	forky, sid	1.6.17+dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
roundcube	source	trixie	1.6.17+dfsg-0+deb13u1		DSA-6391-1
roundcube	source	(unstable)	1.6.17+dfsg-1			1141495

https://github.com/roundcube/roundcubemail/commit/63e42e233c6e8b5100e2e61a4d13addcd1a45bd5 (1.6.17)