PYSEC-2026-2678

Vulnerability from pysec - Published: 2026-07-13 15:19 - Updated: 2026-07-13 16:05
VLAI
Details

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.

Severity
5.3 (Medium)
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
Impacted products
Name purl
neutron pkg:pypi/neutron
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "neutron",
        "purl": "pkg:pypi/neutron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "26.0.0"
            },
            {
              "fixed": "26.0.4"
            },
            {
              "introduced": "27.0.0"
            },
            {
              "fixed": "27.0.3"
            },
            {
              "introduced": "28.0.0"
            },
            {
              "fixed": "28.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "26.0.0",
        "26.0.1",
        "26.0.2",
        "26.0.3",
        "27.0.0",
        "27.0.1",
        "27.0.2",
        "28.0.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-49299",
    "GHSA-xv24-hxh9-2hh9"
  ],
  "details": "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.",
  "id": "PYSEC-2026-2678",
  "modified": "2026-07-13T16:05:02.393069Z",
  "published": "2026-07-13T15:19:13.790301Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49299"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/bugs/2150132"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openstack/neutron"
    },
    {
      "type": "WEB",
      "url": "https://review.opendev.org/c/openstack/neutron/+/989099"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/05/28/8"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/02/7"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/neutron"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-xv24-hxh9-2hh9"
    }
  ],
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenStack Neutron has an Incorrect Authorization issue"
}



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