PT-2026-44555 · Openstack · Openstack Neutron

Tim Shephard · CVE-2026-49299 · Published 2026-05-28 · Updated 2026-07-21

Positive Technologies (AI Summary)

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

Name of the Vulnerable Software and Affected Versions OpenStack Neutron versions 26.0.0 through 28.0.0

Description The tagging controller enforces plural policy action names on single-tag write operations, whereas the defined policy rules use singular names. This mismatch causes the default policy to evaluate the actions as allowed, enabling a project reader to create and update tags on resources within the same project.

Recommendations Update to version 28.0.1.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-49299

GHSA-XV24-HXH9-2HH9

PYSEC-2026-2678

Affected Products

Openstack Neutron

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49299.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-49299 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-49299 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-49299 · Security Note
• https://osv.dev/vulnerability/GHSA-xv24-hxh9-2hh9 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-49299 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-49299 · Vendor Advisory
• https://review.opendev.org/c/openstack/neutron/+/989099 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-49299 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-2678 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-49299 · Vendor Advisory
• https://github.com/openstack/neutron · Note
• https://github.com/advisories/GHSA-xv24-hxh9-2hh9 · Note
• http://openwall.com/lists/oss-security/2026/06/02/7 · Note
• https://opendev.org/openstack/neutron · Note