CVE-2026-15037

Name	CVE-2026-15037
Description	Improper output neutralization (XML injection) in QDom comment, CDATA, and processing-instruction serialization in Qt XML from 4.0.0 through 6.11 allows untrusted text serialized by an application into those nodes to inject arbitrary XML markup, because the node terminators are not escaped under the default InvalidDataPolicy (AcceptInvalidChars). Fixed in Qt 6.12.
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
qt6-base (PTS)	bookworm	6.4.2+dfsg-10	vulnerable
	trixie	6.8.2+dfsg-9+deb13u2	vulnerable
	forky, sid	6.10.2+dfsg-15	vulnerable
qtbase-opensource-src (PTS)	bullseye	5.15.2+dfsg-9+deb11u1	vulnerable
	bullseye (security)	5.15.2+dfsg-9+deb11u2	vulnerable
	bookworm	5.15.8+dfsg-11+deb12u3	vulnerable
	trixie	5.15.15+dfsg-6+deb13u1	vulnerable
	forky, sid	5.15.19+dfsg-3	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
qt6-base	source	(unstable)	(unfixed)
qtbase-opensource-src	source	(unstable)	(unfixed)

https://codereview.qt-project.org/c/qt/qtbase/+/748323