CVE-2026-16527

Name	CVE-2026-16527
Description	An unauthenticated remote attacker can bypass access controls by sending crafted requests to the PCP pmproxy /store endpoint. This allows the attacker to overwrite any PMDA metric, leading to arbitrary code execution and system takeover.
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	1143154

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
pcp (PTS)	bullseye	5.2.6-1	vulnerable
	bookworm	6.0.3-1.1	vulnerable
	trixie	6.3.8-1	vulnerable
	forky, sid	7.2.1-2	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
pcp	source	(unstable)	(unfixed)			1143154

[trixie] - pcp <no-dsa> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2506031