GHSA-XV24-HXH9-2HH9

Vulnerability from github – Published: 2026-05-29 00:38 – Updated: 2026-07-02 18:50
VLAI
Summary
OpenStack Neutron has an Incorrect Authorization issue
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
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "neutron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "28.0.0"
            },
            {
              "fixed": "28.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "neutron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "27.0.0"
            },
            {
              "fixed": "27.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "neutron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "26.0.0"
            },
            {
              "fixed": "26.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-49299"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-02T18:50:58Z",
    "nvd_published_at": "2026-05-28T22:17:02Z",
    "severity": "MODERATE"
  },
  "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": "GHSA-xv24-hxh9-2hh9",
  "modified": "2026-07-02T18:50:58Z",
  "published": "2026-05-29T00:38:33Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "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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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

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