CVE-2026-41187: Calico Tier Authorization Bypass via DeleteCollection
Tigera · Calico
Vendor fix available · Affected: Tigera Calico · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 33% of scored CVEs
DescriptionCVE.org
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.
Affected products3
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Tigera · Calicobefore 3.31.6; from 3.32.0 before 3.32.1
- Tigera · Calico Enterprisebefore 3.21.7; from 3.22.0 before 3.22.5
- Tigera · Calico Cloudbefore 22.4.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
CoverageNo articles yet
No CyberSIXT article names CVE-2026-41187 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.