CVE-2026-49299

Name	CVE-2026-49299
Description	In OpenStack Neutron before 28.0.1, the tagging controller enforces plural policy action names on single-tag write operations while the defined policy rules use singular names. The mismatched names evaluate as allowed under the default policy, permitting a project reader to create and update tags on same-project resources. Deployments running Neutron 26.0.0 or later are affected.
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	1138172

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
neutron (PTS)	bullseye (security), bullseye	2:17.2.1-0+deb11u1	vulnerable
	bookworm	2:21.0.0-7	vulnerable
	trixie	2:26.0.0-9	vulnerable
	forky	2:27.0.1-6	vulnerable
	sid	2:28.0.0-4	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
neutron	source	(unstable)	2:28.0.0-4			1138172

[trixie] - neutron <no-dsa> (Minor issue)
[bookworm] - neutron <no-dsa> (Minor issue)
https://security.openstack.org/ossa/OSSA-2026-016.html