CVE-2026-77643

Name	CVE-2026-77643
Description	A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.
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)
Debian Bugs	1144490

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xapian-core (PTS)	bullseye	1.4.18-3+deb11u1	vulnerable
	bookworm	1.4.22-1	vulnerable
	trixie	1.4.29-3	vulnerable
	forky, sid	1.4.32-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
xapian-core	source	(unstable)	1.4.32-1			1144490

Notes

[trixie] - xapian-core <no-dsa> (Minor issue)
https://lists.xapian.org/pipermail/xapian-devel/2026-August/003429.html
https://trac.xapian.org/wiki/SecurityFixes/2018-07-02#a2026-08-13update