{"id":"CVE-2026-41187","summary":"Calico Tier Authorization Bypass via DeleteCollection","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.","modified":"2026-08-12T03:51:12.050553963Z","published":"2026-07-30T14:45:04.247Z","related":["CGA-wvph-9h5v-r7ww"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41187.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"fixed":"3.21.7"},{"fixed":"22.4.0"}]}],"cna_assigner":"Tigera","cwe_ids":["CWE-285","CWE-863"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/projectcalico/calico","events":[{"introduced":"0"},{"fixed":"cc4364f81fbb6dc6fe6e140456c98169dac99f1c"},{"introduced":"a86e41d021c4c60e1f73d8dce396fe249d708cc7"},{"fixed":"a0e92905ed405c469494cf818821373e0c44d64c"},{"introduced":"eb1cf57823a1dd8d25c48b82fd023ea9e3e17996"},{"fixed":"0ca9d1b93644778cafdf1812f3dda02ac0c361e8"}],"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"}}],"versions":["v3.32.0","v3.31.1","v3.31.0-0.dev","v3.30.0-0.dev","v3.29.0-0.dev","v3.28.0-0.dev","v3.27.0-0.dev","v3.25.0-0.dev","v3.22.3-0.dev","v3.24.0-0.dev","v3.18.5-calico","v3.18.5","v3.17.5-calico","v3.17.5","v3.18.1-calico","v3.18.1","v3.16.5-calico","v3.16.5","v3.16.0-calico","v3.16.0","v3.11.1-calico","v3.11.1","v3.9.4-calico","v3.9.4","v3.8.5-calico","v3.8.5","v3.10.2-calico","v3.10.2","v3.10.0-calico","v3.10.0","v3.9.0-calico","v3.9.0","v3.3.7-calico","v3.3.7","v3.2.8-calico","v3.2.8","v3.1.7-calico","v3.1.7","v3.0.12-calico","v3.0.12","v3.2.0-calico","v3.2.0","v3.0.1-calico","v3.0.1","v3.0.0-calico","v3.0.0","v2.6.2-calico","v2.6.2","v3.0.0-alpha1-rc1-calico","v3.0.0-alpha1-rc1","v2.6.0-calico","v2.6.0","v2.6.0-rc2-calico","v2.6.0-rc2","v2.6.0-rc1-calico","v2.6.0-rc1","v2.5.0-calico","v2.5.0","v2.5.0-rc2-calico","v2.5.0-rc2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41187.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}