CVE-2026-41187

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-07-30. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
6.5
EG Score
6.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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 computed
Severity65% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 8, 2026

Advisory Details (5)

Auto-updated Jul 30, 2026
Upstream 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/12737
github_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/12736
github_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/12735
github_pr

Pick rbac fixes

Fix merged in projectcalico/calico PR #12731 on 2026-05-11 — awaiting tagged release

https://github.com/projectcalico/calico/pull/12731

Vendor 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 17× in last 7d / 70× 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.

Showing the most recent 100 of 123 total refreshes for this CVE.

  1. 2026-09-15 03:18 UTCEG score recompute
  2. 2026-09-15 03:18 UTCGHSA enrichment
  3. 2026-09-13 18:35 UTCEG score recompute
  4. 2026-09-13 18:35 UTCGHSA enrichment
  5. 2026-09-13 16:47 UTCEPSS rescore
  6. 2026-09-12 16:47 UTCEG score recompute
  7. 2026-09-12 16:47 UTCGHSA enrichment
  8. 2026-09-12 15:01 UTCEPSS rescore
  9. 2026-09-11 14:59 UTCEG score recompute
  10. 2026-09-11 14:59 UTCGHSA enrichment
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 09:37 UTCEPSS rescore
  13. 2026-09-10 10:03 UTCEG score recompute
  14. 2026-09-10 10:03 UTCGHSA enrichment
  15. 2026-09-10 09:34 UTCEPSS rescore
  16. 2026-09-09 07:15 UTCEG score recompute
  17. 2026-09-09 07:15 UTCGHSA enrichment
  18. 2026-09-08 22:00 UTCEPSS rescore
  19. 2026-09-07 22:43 UTCEG score recompute
  20. 2026-09-07 22:42 UTCGHSA enrichment
  21. 2026-09-07 16:01 UTCEPSS rescore
  22. 2026-09-06 20:55 UTCEG score recompute
  23. 2026-09-06 20:55 UTCGHSA enrichment
  24. 2026-09-06 13:47 UTCEPSS rescore
  25. 2026-09-05 18:50 UTCEG score recompute
Show 75 more
  1. 2026-09-05 18:50 UTCGHSA enrichment
  2. 2026-09-04 11:27 UTCEG score recompute
  3. 2026-09-04 11:27 UTCGHSA enrichment
  4. 2026-09-04 05:06 UTCEPSS rescore
  5. 2026-09-02 14:12 UTCEPSS rescore
  6. 2026-09-02 08:23 UTCEG score recompute
  7. 2026-09-02 08:23 UTCGHSA enrichment
  8. 2026-09-01 13:53 UTCEPSS rescore
  9. 2026-09-01 04:39 UTCEPSS rescore
  10. 2026-09-01 02:56 UTCGHSA enrichment
  11. 2026-08-31 00:22 UTCEG score recompute
  12. 2026-08-31 00:22 UTCGHSA enrichment
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 01:22 UTCEPSS rescore
  15. 2026-08-29 22:34 UTCEG score recompute
  16. 2026-08-29 22:34 UTCGHSA enrichment
  17. 2026-08-28 21:41 UTCEPSS rescore
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-27 10:12 UTCEG score recompute
  20. 2026-08-27 10:12 UTCGHSA enrichment
  21. 2026-08-26 14:46 UTCEPSS rescore
  22. 2026-08-26 08:25 UTCEG score recompute
  23. 2026-08-26 08:25 UTCGHSA enrichment
  24. 2026-08-25 13:49 UTCEPSS rescore
  25. 2026-08-25 06:38 UTCEG score recompute
  26. 2026-08-25 06:38 UTCGHSA enrichment
  27. 2026-08-24 04:47 UTCGHSA enrichment
  28. 2026-08-23 03:00 UTCEG score recompute
  29. 2026-08-23 03:00 UTCGHSA enrichment
  30. 2026-08-23 00:19 UTCEPSS rescore
  31. 2026-08-22 01:12 UTCEG score recompute
  32. 2026-08-22 01:12 UTCGHSA enrichment
  33. 2026-08-21 23:49 UTCEPSS rescore
  34. 2026-08-20 23:24 UTCEG score recompute
  35. 2026-08-20 23:24 UTCGHSA enrichment
  36. 2026-08-20 22:55 UTCEPSS rescore
  37. 2026-08-19 21:37 UTCEG score recompute
  38. 2026-08-19 21:37 UTCGHSA enrichment
  39. 2026-08-19 17:03 UTCEPSS rescore
  40. 2026-08-18 19:16 UTCEG score recompute
  41. 2026-08-18 19:16 UTCGHSA enrichment
  42. 2026-08-18 13:48 UTCEPSS rescore
  43. 2026-08-17 17:29 UTCEG score recompute
  44. 2026-08-17 17:29 UTCGHSA enrichment
  45. 2026-08-17 13:47 UTCEPSS rescore
  46. 2026-08-16 15:38 UTCEG score recompute
  47. 2026-08-16 15:38 UTCGHSA enrichment
  48. 2026-08-16 14:56 UTCEPSS rescore
  49. 2026-08-16 02:14 UTCEPSS rescore
  50. 2026-08-15 13:51 UTCEG score recompute
  51. 2026-08-15 13:51 UTCGHSA enrichment
  52. 2026-08-15 01:30 UTCEPSS rescore
  53. 2026-08-14 12:03 UTCEG score recompute
  54. 2026-08-14 12:03 UTCGHSA enrichment
  55. 2026-08-13 22:00 UTCEPSS rescore
  56. 2026-08-13 10:16 UTCEG score recompute
  57. 2026-08-13 10:16 UTCGHSA enrichment
  58. 2026-08-12 13:51 UTCEPSS rescore
  59. 2026-08-12 08:29 UTCEG score recompute
  60. 2026-08-12 08:29 UTCGHSA enrichment
  61. 2026-08-11 13:43 UTCEPSS rescore
  62. 2026-08-11 06:41 UTCEG score recompute
  63. 2026-08-11 06:41 UTCGHSA enrichment
  64. 2026-08-11 00:00 UTCEPSS rescore
  65. 2026-08-10 04:54 UTCEG score recompute
  66. 2026-08-10 04:54 UTCGHSA enrichment
  67. 2026-08-09 13:46 UTCEPSS rescore
  68. 2026-08-09 03:07 UTCEG score recompute
  69. 2026-08-09 03:07 UTCGHSA enrichment
  70. 2026-08-08 16:37 UTCEPSS rescore
  71. 2026-08-08 01:20 UTCEG score recompute▲ 0.30
  72. 2026-08-08 01:20 UTCGHSA enrichment
  73. 2026-08-08 01:20 UTCNVD updateCVSS v3 → 6.5
  74. 2026-08-07 05:57 UTCEG score recompute
  75. 2026-08-07 05:57 UTCGHSA enrichment

Frequently asked(5)

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, with the most recent update on August 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41187 actively exploited?
CVE-2026-41187 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.4% of all scored CVEs.
What is the CVSS score of CVE-2026-41187?
CVE-2026-41187 has a CVSS v3 base score of 6.5 (NVD).
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.

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