{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:*",
              "cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.31.6"
              },
              {
                "introduced": "3.22.0"
              },
              {
                "fixed": "3.22.4"
              },
              {
                "introduced": "3.32.0"
              },
              {
                "fixed": "3.32.1"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "cc4364f81fbb6dc6fe6e140456c98169dac99f1c"
            },
            {
              "introduced": "a86e41d021c4c60e1f73d8dce396fe249d708cc7"
            },
            {
              "fixed": "a0e92905ed405c469494cf818821373e0c44d64c"
            },
            {
              "introduced": "eb1cf57823a1dd8d25c48b82fd023ea9e3e17996"
            },
            {
              "fixed": "0ca9d1b93644778cafdf1812f3dda02ac0c361e8"
            }
          ],
          "repo": "https://github.com/projectcalico/calico",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Tigera",
    "cwe_ids": [
      "CWE-285",
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41187.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "3.21.7"
          },
          {
            "fixed": "22.4.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Calico's apiserver wraps tier-scoped resources so that every operation runs through AuthorizeTierOperation, but the Delete override on NetworkPolicy, GlobalNetworkPolicy, and their staged variants is not invoked for DeleteCollection requests. A user holding the deletecollection verb or wildcard verbs on tier-scoped policy resources can bulk-delete policies in tiers they otherwise have no rights on, breaking the tier authorization boundary.",
  "id": "CVE-2026-41187",
  "modified": "2026-08-12T03:51:12.050553963Z",
  "published": "2026-07-30T14:45:04.247Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41187.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41187"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.tigera.io/security-bulletins/tta-2026-006/"
    },
    {
      "type": "FIX",
      "url": "https://github.com/projectcalico/calico/pull/12731"
    },
    {
      "type": "FIX",
      "url": "https://github.com/projectcalico/calico/pull/12735"
    },
    {
      "type": "FIX",
      "url": "https://github.com/projectcalico/calico/pull/12736"
    },
    {
      "type": "FIX",
      "url": "https://github.com/projectcalico/calico/pull/12737"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:L/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Calico Tier Authorization Bypass via DeleteCollection"
}