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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://bugs.launchpad.net/bugs/2150132 issue-tracking
• https://review.opendev.org/c/openstack/neutron/+/989099 patch
• https://www.openwall.com/lists/oss-security/2026/05/28/8
• http://www.openwall.com/lists/oss-security/2026/06/02/7