CVE-2026-49299

MEDIUM EPSS 21.1%

Published May 28, 20261mo ago · Modified Jun 17, 20262w ago

5.3 CVSS 4.0

Medium

Published May 28, 2026 1mo ago

Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score

5.3

Exploitability

—

Impact

—

Vector string

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

21.1% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

References 4

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.