Medium severity · published May 28, 2026
CVE-2026-49299
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
5.3
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
Neutron · OpenStack
26.0.0 before 26.0.4; 27.0.0 before 27.0.3; 28.0.0 before 28.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49299
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-49299
bugs.launchpad.net
https://bugs.launchpad.net/bugs/2150132
review.opendev.org
https://review.opendev.org/c/openstack/neutron/+/989099
www.openwall.com
https://www.openwall.com/lists/oss-security/2026/05/28/8
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/06/02/7
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