CVE-2026-41187

MEDIUM

Calico Tier Authorization Bypass via DeleteCollection

Title source: cna
STIX 2.1

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.

References (5)

Core 5

Scores

CVSS v4 6.2
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-285 CWE-863
Status published
Products (5)
Tigera/Calico < 3.31.6
Tigera/Calico 3.32.0 - 3.32.1
Tigera/Calico Cloud < 22.4.0
Tigera/Calico Enterprise < 3.21.7
Tigera/Calico Enterprise 3.22.0 - 3.22.5
Published Jul 30, 2026
Tracked Since Jul 30, 2026