CVE-2026-49299

unknown

Published 2026-05-28 · Modified 2026-06-02

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CVSS v3

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CVSS v4 NEW

5.3

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

VIR risk

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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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2026-49299 NameCVE-2026-49299 DescriptionIn 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…

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, bullseye (security)	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

Notes

[trixie] - neutron <no-dsa> (Minor issue)
[bookworm] - neutron <no-dsa> (Minor issue)
[bullseye] - neutron <postponed> (Minor issue; can be fixed with next upload)
https://security.openstack.org/ossa/OSSA-2026-016.html

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

[trixie] - neutron <no-dsa> (Minor issue)[bookworm] - neutron <no-dsa> (Minor issue)[bullseye] - neutron <postponed> (Minor issue; can be fixed with next upload)https://security.openstack.org/ossa/OSSA-2026-016.html

OS impact

Debian Mixed 5 releases

Version	Status	Fixed in
trixie	Affected	—
sid	Fixed	`2:28.0.0-4`
forky	Affected	—
bullseye	Affected	—
bookworm	Affected	—

References

CWEs

CWE-863

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.