CVE-2026-41187: CWE-285 Improper Authorization in Tigera Calico
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.
AI Analysis
Technical Summary
Tigera Calico's apiserver enforces authorization on tier-scoped resources via AuthorizeTierOperation for individual operations. However, for DeleteCollection requests targeting NetworkPolicy, GlobalNetworkPolicy, and their staged variants, the Delete override is bypassed. Consequently, a user possessing deletecollection or wildcard delete verbs on tier-scoped policy resources can delete multiple policies across tiers without proper authorization checks, breaking the intended tier authorization model. This vulnerability is identified as CWE-285 (Improper Authorization) and CWE-863 (Incorrect Authorization). It affects exactly version 3.32.0 of Calico. No official patch or remediation level has been published as of the data provided.
Potential Impact
An attacker or user with deletecollection or wildcard delete permissions on tier-scoped policy resources can bulk-delete network policies in tiers they are not authorized to modify. This breaks the tier authorization boundary, potentially disrupting network security policies and causing denial of service or security policy bypass within the affected environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict deletecollection and wildcard delete permissions on tier-scoped policy resources to trusted administrators only to minimize risk.
CVE-2026-41187: CWE-285 Improper Authorization in Tigera Calico
Description
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.
CVSS v4.0
Score 6.2medium
Affected software
pkg:github/projectcalico/calicoRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Tigera Calico's apiserver enforces authorization on tier-scoped resources via AuthorizeTierOperation for individual operations. However, for DeleteCollection requests targeting NetworkPolicy, GlobalNetworkPolicy, and their staged variants, the Delete override is bypassed. Consequently, a user possessing deletecollection or wildcard delete verbs on tier-scoped policy resources can delete multiple policies across tiers without proper authorization checks, breaking the intended tier authorization model. This vulnerability is identified as CWE-285 (Improper Authorization) and CWE-863 (Incorrect Authorization). It affects exactly version 3.32.0 of Calico. No official patch or remediation level has been published as of the data provided.
Potential Impact
An attacker or user with deletecollection or wildcard delete permissions on tier-scoped policy resources can bulk-delete network policies in tiers they are not authorized to modify. This breaks the tier authorization boundary, potentially disrupting network security policies and causing denial of service or security policy bypass within the affected environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict deletecollection and wildcard delete permissions on tier-scoped policy resources to trusted administrators only to minimize risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Tigera
- Date Reserved
- 2026-04-17T17:41:35.905Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a6b81699c2644c7f860ea8d
Added to database: 07/30/2026, 16:52:57 UTC
Last enriched: 07/30/2026, 17:10:20 UTC
Last updated: 07/30/2026, 23:56:14 UTC
Views: 8
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