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DEBIAN-CVE-2026-42999

Type: advisorySource: OSV1 source record

An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone RBAC policy enforcer in enforce_call unconditionally merges the raw JSON request body into the policy enforcement dictionary via policy_dict.update(json_input.copy()), overwriting trusted target data that was previously set from database lookups. Because flask.request.get_json is called with force=True, this works regardless of Content-Type or HTTP method. Any authenticated user can inject arbitrary policy target attributes (e.g., user_id, project_id) into the request body to bypass RBAC checks and perform unauthorized operations on resources belonging to other users or projects. This was introduced in commit 5ea59f52 (Rocky/14.0.0).

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-42999

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-42999

keystone

Source reference: /affected/0/package/name

Affected versions
2:22.0.0-2

Source reference: /affected/0/versions

2:22.0.2-0+deb12u1

Source reference: /affected/0/versions

2:22.0.2-0+deb12u2

Source reference: /affected/0/versions

Fixed versions
2:22.0.2-0+deb12u3

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

keystone

Source reference: /affected/1/package/name

Affected versions
2:27.0.0-3

Source reference: /affected/1/versions

2:27.0.0-3+deb13u1

Source reference: /affected/1/versions

2:27.0.0-3+deb13u3

Source reference: /affected/1/versions

Fixed versions
2:27.0.0-3+deb13u4

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

keystone

Source reference: /affected/2/package/name

Affected versions
2:27.0.0-3

Source reference: /affected/2/versions

2:28.0.0-1

Source reference: /affected/2/versions

2:28.0.0-2

Source reference: /affected/2/versions

2:28.0.0-3

Source reference: /affected/2/versions

2:28.0.0-4

Source reference: /affected/2/versions

2:28.0.0-5

Source reference: /affected/2/versions

2:28.0.0-6

Source reference: /affected/2/versions

2:28.0.0~rc1-1

Source reference: /affected/2/versions

2:28.0.0~rc1-2

Source reference: /affected/2/versions

2:28.0.0~rc1-4

Source reference: /affected/2/versions

2:29.0.0-1

Source reference: /affected/2/versions

2:29.0.0-2

Source reference: /affected/2/versions

2:29.0.0-3

Source reference: /affected/2/versions

2:29.0.0~rc1-1

Source reference: /affected/2/versions

2:29.0.0~rc1-2

Source reference: /affected/2/versions

2:29.0.1-1

Source reference: /affected/2/versions

Fixed versions
2:29.0.1-2

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2:22.0.2-0+deb12u3"
          }
        ]
      }
    ],
    "package": {
      "name": "keystone",
      "purl": "pkg:deb/debian/keystone?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2:22.0.0-2",
      "2:22.0.2-0+deb12u1",
      "2:22.0.2-0+deb12u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42999.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2:27.0.0-3+deb13u4"
          }
        ]
      }
    ],
    "package": {
      "name": "keystone",
      "purl": "pkg:deb/debian/keystone?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2:27.0.0-3",
      "2:27.0.0-3+deb13u1",
      "2:27.0.0-3+deb13u3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42999.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2:29.0.1-2"
          }
        ]
      }
    ],
    "package": {
      "name": "keystone",
      "purl": "pkg:deb/debian/keystone?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2:27.0.0-3",
      "2:28.0.0-1",
      "2:28.0.0-2",
      "2:28.0.0-3",
      "2:28.0.0-4",
      "2:28.0.0-5",
      "2:28.0.0-6",
      "2:28.0.0~rc1-1",
      "2:28.0.0~rc1-2",
      "2:28.0.0~rc1-4",
      "2:29.0.0-1",
      "2:29.0.0-2",
      "2:29.0.0-3",
      "2:29.0.0~rc1-1",
      "2:29.0.0~rc1-2",
      "2:29.0.1-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42999.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57652 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement