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CVE-2026-49299

Published: May 28, 2026

Modified: Jun 2, 2026

PUBLISHED

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.

Vendor	Product	Versions
OpenStack	Neutron	affected `26.0.0 - < 26.0.4` affected `27.0.0 - < 27.0.3` affected `28.0.0 - < 28.0.1`

Weaknesses (CWE)

References

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

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