CVE-2026-40505

Name	CVE-2026-40505
Description	MuPDF mutool does not sanitize PDF metadata fields before writing them to terminal output, allowing attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to the terminal when running mutool info, enabling them to clear the terminal display and render arbitrary text for social engineering attacks such as presenting fake prompts or spoofed commands.
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
mupdf (PTS)	bullseye	1.17.0+ds1-2	vulnerable
	bullseye (security)	1.17.0+ds1-2+deb11u1	vulnerable
	bookworm	1.21.1+ds2-1	vulnerable
	trixie	1.25.1+ds1-6	vulnerable
	forky, sid	1.27.0+ds1-4	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
mupdf	source	(unstable)	(unfixed)

Notes

[trixie] - mupdf <no-dsa> (Minor issue)
[bookworm] - mupdf <no-dsa> (Minor issue)
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=0f17d789fe8c29b41e47663be82514aaca3a4dfb
https://bugs.ghostscript.com/show_bug.cgi?id=709108