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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 5
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Tigera Calico
cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*
|
— |
3.21.7
|
|
Tigera Calico
cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:*
|
— |
3.31.6
|
|
Tigera Calico
cpe:2.3:a:tigera:calico:*:*:*:*:cloud:*:*:*
|
— |
<= 22.4.0
|
|
Tigera Calico
cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*
|
3.22.0
|
3.22.4
|
|
Tigera Calico
cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:*
|
3.32.0
|
3.32.1
|
References 5
https://github.com/projectcalico/calico/pull/12731
psirt@tigera.io
https://github.com/projectcalico/calico/pull/12735
psirt@tigera.io
https://github.com/projectcalico/calico/pull/12736
psirt@tigera.io
https://github.com/projectcalico/calico/pull/12737
psirt@tigera.io
https://www.tigera.io/security-bulletins/tta-2026-006/
psirt@tigera.io