{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41187","assignerOrgId":"e6d453f4-3dae-4941-bcea-9af25f4e824d","state":"PUBLISHED","assignerShortName":"Tigera","dateReserved":"2026-04-17T17:41:35.905Z","datePublished":"2026-07-30T14:45:04.247Z","dateUpdated":"2026-07-30T16:11:27.341Z"},"containers":{"cna":{"providerMetadata":{"orgId":"e6d453f4-3dae-4941-bcea-9af25f4e824d","shortName":"Tigera","dateUpdated":"2026-07-30T14:45:04.247Z"},"title":"Calico Tier Authorization Bypass via DeleteCollection","datePublic":"2026-07-30T16:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-285","description":"CWE-285 Improper Authorization","type":"CWE"}]},{"descriptions":[{"lang":"en","cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","type":"CWE"}]}],"affected":[{"vendor":"Tigera","product":"Calico","versions":[{"status":"affected","version":"0","lessThan":"3.31.6","versionType":"semver"},{"status":"affected","version":"3.32.0","lessThan":"3.32.1","versionType":"semver"}],"defaultStatus":"unaffected"},{"vendor":"Tigera","product":"Calico Enterprise","versions":[{"status":"affected","version":"0","lessThan":"3.21.7","versionType":"semver"},{"status":"affected","version":"3.22.0","lessThan":"3.22.5","versionType":"semver"}],"defaultStatus":"unaffected"},{"vendor":"Tigera","product":"Calico Cloud","versions":[{"status":"affected","version":"0","lessThan":"22.4.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>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.</p>"}]}],"references":[{"url":"https://github.com/projectcalico/calico/pull/12731","tags":["patch"]},{"url":"https://github.com/projectcalico/calico/pull/12735","tags":["patch"]},{"url":"https://github.com/projectcalico/calico/pull/12736","tags":["patch"]},{"url":"https://github.com/projectcalico/calico/pull/12737","tags":["patch"]},{"url":"https://www.tigera.io/security-bulletins/tta-2026-006/","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.2,"vectorString":"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"}}],"credits":[{"lang":"en","value":"Behnam Shobiri","type":"finder"},{"lang":"en","value":"Mazdak Nasab","type":"remediation developer"},{"lang":"en","value":"Anthony Tam","type":"remediation reviewer"},{"lang":"en","value":"Matt Dupre","type":"remediation reviewer"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-30T16:11:20.822241Z","id":"CVE-2026-41187","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-30T16:11:27.341Z"}}]}}