PT-2026-44555 · Openstack · Neutron

Published 2026-05-28 · Updated 2026-05-28 · CVE-2026-49299

Mitre

CVSS v4.0

5.3

Medium

Base vector

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

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.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-49299

Affected Products

Neutron

References · 4

• https://review.opendev.org/c/openstack/neutron/+/989099 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-49299 · Security Note
• https://bugs.launchpad.net/bugs/2150132 · Note
• https://openwall.com/lists/oss-security/2026/05/28/8 · Note