{"id":"CVE-2026-41187","title":"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 requ…","summary":"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 requ…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-285","CWE-863"],"vendor":"tigera","product":"calico","affected":["calico < 3.21.7","calico < 3.31.6","calico <= 22.4.0","calico >= 3.22.0, < 3.22.4","calico >= 3.32.0, < 3.32.1"],"patched":["calico 3.32.1"],"published":"2026-07-30","updated":"2026-08-08","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41187","references":[{"url":"https://github.com/projectcalico/calico/pull/12731","label":"psirt@tigera.io"},{"url":"https://github.com/projectcalico/calico/pull/12735","label":"psirt@tigera.io"},{"url":"https://github.com/projectcalico/calico/pull/12736","label":"psirt@tigera.io"},{"url":"https://github.com/projectcalico/calico/pull/12737","label":"psirt@tigera.io"},{"url":"https://www.tigera.io/security-bulletins/tta-2026-006/","label":"psirt@tigera.io"}],"tags":["nvd"],"epss":0.0022,"epssPercentile":0.12786,"ingestedAt":"2026-08-08T13:22:52.550Z","slug":"CVE-2026-41187","body":"## Overview\n\nCalico'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.\n\n## Affected\n\n- `calico < 3.21.7`\n- `calico < 3.31.6`\n- `calico <= 22.4.0`\n- `calico >= 3.22.0, < 3.22.4`\n- `calico >= 3.32.0, < 3.32.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `calico 3.32.1`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}