CVE-2026-84837

Name	CVE-2026-84837
Description	A flaw was found in rpm. An attacker can exploit a command injection vulnerability by influencing the path or filename of a tarball processed by `rpmbuild -t*` to include shell metacharacters. This is particularly relevant in automated build or continuous integration (CI) workflows that ingest externally supplied artifact names. Successful exploitation allows for arbitrary command execution with the privileges of the build user, which could lead to information disclosure or disruption of the build environment.
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	1146602

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rpm (PTS)	bookworm	4.18.0+dfsg-1+deb12u1	vulnerable
	trixie	4.20.1+dfsg-3	vulnerable
	forky, sid	6.1.0-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rpm	source	(unstable)	(unfixed)			1146602

[trixie] - rpm <no-dsa> (Minor issue)
[bookworm] - rpm <postponed> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2478408