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.
CVE-2026-41187
MEDIUMPre-NVD 6.26.2Trending — 3 sources updated this week
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 6.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: secondary
6.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 6.2Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.2
- EG Score
- 6.2(low)
- EG Risk
- 32(Track)EG Risk 32/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity62% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
July 30, 2026
Last Modified
July 30, 2026
Advisory Details (5)
Auto-updated Jul 30, 2026Upstream fix merged — awaiting tagged release. Sources: github_pr.
generic
Security Bulletins – TTA-2026-006, CVE-2026-41187 | Tigera – Creator of Calico
https://www.tigera.io/security-bulletins/tta-2026-006/github_pr
[Release v3.30] Pick of RBAC fixes
Fix merged in projectcalico/calico PR #12737 on 2026-05-11 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12737github_pr
[Release v3.31] Pick of RBAC fixes
Fix merged in projectcalico/calico PR #12736 on 2026-05-11 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12736github_pr
[Release v3.32] Pick of RBAC fixes
Fix merged in projectcalico/calico PR #12735 on 2026-05-11 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12735github_pr
Pick rbac fixes
Fix merged in projectcalico/calico PR #12731 on 2026-05-11 — awaiting tagged release
https://github.com/projectcalico/calico/pull/12731Vendor Advisories for CVE-2026-41187(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-30 17:25 UTCGHSA enrichment
- 2026-07-30 16:52 UTCGHSA enrichment
- 2026-07-30 15:31 UTCEG score recompute
- 2026-07-30 14:56 UTCEG score recompute
- 2026-07-30 14:56 UTCMITRE cvelistV5first tracked
Frequently asked(4)
What is CVE-2026-41187?
CVE-2026-41187 is a medium vulnerability published on July 30, 2026. 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…
When was CVE-2026-41187 disclosed?
CVE-2026-41187 was first published in the National Vulnerability Database on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-41187?
CVE-2026-41187 has a CVSS v3 base score of 6.2 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-41187?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41187, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-41187
Is Your Infrastructure Affected by CVE-2026-41187?
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