{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.28.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c020900a9d85989e4280bd03184976bc33e2e61d"
            },
            {
              "fixed": "8e4c1dac18e4eda50ba18c78b22d9fe63c22aa7b"
            }
          ],
          "repo": "https://github.com/warp-tech/warpgate",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-fjgc-484v-j6mf"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91167.json"
  },
  "details": "Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. Prior to 0.28.4, PUT /@warpgate/admin/api/users/:id/roles/:role_id reaches api_update_user_role in warpgate-admin/src/api/users.rs through AdminContext but does not require AdminPermission::AccessRolesAssign. A limited administrator with any permission can update expires_at on an existing UserRoleAssignment and clear revoked_at, extending an expiring grant or reinstating a revoked grant. The endpoint cannot create a role assignment that never existed because it returns not found without a matching user and role pair. This issue is fixed in version 0.28.4.",
  "id": "CVE-2026-91167",
  "modified": "2026-09-26T03:30:49.697565187Z",
  "published": "2026-09-21T18:54:38.214Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/warp-tech/warpgate/releases/tag/v0.28.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91167.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/warp-tech/warpgate/security/advisories/GHSA-fjgc-484v-j6mf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91167"
    },
    {
      "type": "FIX",
      "url": "https://github.com/warp-tech/warpgate/commit/c020900a9d85989e4280bd03184976bc33e2e61d"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Warpgate: Missing authorization check on `PUT /users/:id/roles/:role_id` allows any admin to bypass the `AccessRolesAssign` permission boundary"
}