CVE-2026-44945

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 68% of all CVEs by exploit prediction. 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: epss, secondary
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

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

A privilege escalation vulnerability exists in Rancher's impersonation middleware (pkg/auth/requests/impersonate.go). An authenticated Rancher user with the default user global role can gain full administrative access to the Rancher control plane and transitively to all downstream clusters it manages.

This issue affects Rancher: from 2.11.0 before 2.11.16, from 2.12.0 before 2.12.12, from 2.13.0 before 2.13.8, and from 2.14.0 before 2.14.2.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

August 5, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
Patch available. Sources: github, github_pr.
github Patch Available

Privilege escalation in Rancher's local cluster due to cross-cluster impersonation (confused-deputy problem) · Advisory · rancher/rancher · GitHub

https://github.com/rancher/rancher/security/advisories/GHSA-v584-7w32-jwpq
github_pr

Restrict cluster-impersonation.

Fix merged in rancher/rancher PR #55983 on 2026-07-13 — awaiting tagged release

https://github.com/rancher/rancher/pull/55983
generic

Making sure you're not a bot!

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44945

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 54× 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.

  1. 2026-09-18 23:40 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 01:07 UTCEG score recompute
  4. 2026-09-17 19:31 UTCEPSS rescore
  5. 2026-09-17 01:08 UTCEG score recompute
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 11:13 UTCEG score recompute
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 06:52 UTCEG score recompute
  10. 2026-09-13 20:01 UTCEG score recompute
  11. 2026-09-13 16:47 UTCEPSS rescore
  12. 2026-09-12 17:47 UTCEG score recompute
  13. 2026-09-12 15:01 UTCEPSS rescore
  14. 2026-09-11 19:17 UTCEG score recompute
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 14:42 UTCEG score recompute
  17. 2026-09-11 09:37 UTCEPSS rescore
  18. 2026-09-10 12:47 UTCEG score recompute
  19. 2026-09-10 09:34 UTCEPSS rescore
  20. 2026-09-09 06:25 UTCEG score recompute
  21. 2026-09-08 22:00 UTCEPSS rescore
  22. 2026-09-07 18:21 UTCEG score recompute
  23. 2026-09-07 16:01 UTCEPSS rescore
  24. 2026-09-06 16:31 UTCEG score recompute
  25. 2026-09-06 13:47 UTCEPSS rescore
Show 64 more
  1. 2026-09-05 18:27 UTCEG score recompute
  2. 2026-09-05 03:52 UTCEG score recompute
  3. 2026-09-04 09:36 UTCEG score recompute
  4. 2026-09-04 05:06 UTCEPSS rescore
  5. 2026-09-03 07:01 UTCEG score recompute
  6. 2026-09-02 14:12 UTCEPSS rescore
  7. 2026-09-01 20:40 UTCEG score recompute
  8. 2026-09-01 13:54 UTCEPSS rescore
  9. 2026-09-01 07:41 UTCEG score recompute
  10. 2026-08-30 19:21 UTCEG score recompute
  11. 2026-08-30 19:17 UTCEPSS rescore
  12. 2026-08-30 01:50 UTCEG score recompute
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-29 21:29 UTCEG score recompute
  15. 2026-08-28 21:41 UTCEPSS rescore
  16. 2026-08-27 19:56 UTCEG score recompute
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 19:07 UTCEG score recompute
  19. 2026-08-26 14:46 UTCEPSS rescore
  20. 2026-08-25 16:16 UTCEG score recompute
  21. 2026-08-25 13:49 UTCEPSS rescore
  22. 2026-08-24 18:31 UTCEG score recompute
  23. 2026-08-24 09:49 UTCEG score recompute
  24. 2026-08-23 03:21 UTCEG score recompute
  25. 2026-08-23 00:19 UTCEPSS rescore
  26. 2026-08-22 01:12 UTCEG score recompute
  27. 2026-08-21 23:49 UTCEPSS rescore
  28. 2026-08-20 23:01 UTCEG score recompute
  29. 2026-08-20 22:55 UTCEPSS rescore
  30. 2026-08-19 20:40 UTCEG score recompute
  31. 2026-08-19 17:04 UTCEPSS rescore
  32. 2026-08-18 18:15 UTCEG score recompute
  33. 2026-08-18 13:48 UTCEPSS rescore
  34. 2026-08-17 15:27 UTCEG score recompute
  35. 2026-08-17 13:47 UTCEPSS rescore
  36. 2026-08-16 17:43 UTCEG score recompute
  37. 2026-08-16 14:56 UTCEPSS rescore
  38. 2026-08-16 04:40 UTCEG score recompute
  39. 2026-08-16 02:14 UTCEPSS rescore
  40. 2026-08-15 02:35 UTCEG score recompute
  41. 2026-08-15 01:30 UTCEPSS rescore
  42. 2026-08-14 00:32 UTCEG score recompute
  43. 2026-08-13 22:00 UTCEPSS rescore
  44. 2026-08-12 17:53 UTCEG score recompute
  45. 2026-08-12 13:51 UTCEPSS rescore
  46. 2026-08-11 15:49 UTCEG score recompute
  47. 2026-08-11 02:47 UTCEG score recompute
  48. 2026-08-11 00:00 UTCEPSS rescore
  49. 2026-08-09 16:02 UTCEG score recompute
  50. 2026-08-09 13:46 UTCEPSS rescore
  51. 2026-08-08 18:17 UTCEG score recompute
  52. 2026-08-08 16:37 UTCEPSS rescore
  53. 2026-08-07 20:34 UTCEG score recompute
  54. 2026-08-06 14:08 UTCEG score recompute
  55. 2026-08-06 13:46 UTCEPSS rescore
  56. 2026-08-06 05:25 UTCEG score recompute
  57. 2026-08-06 04:25 UTCEG score recompute
  58. 2026-08-05 23:08 UTCEG score recompute
  59. 2026-08-05 19:17 UTCEPSS rescore
  60. 2026-08-05 14:26 UTCEG score recompute
  61. 2026-08-05 13:47 UTCEG score recompute
  62. 2026-08-05 10:23 UTCEG score recompute
  63. 2026-08-05 10:11 UTCEG score recompute
  64. 2026-08-05 10:11 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-44945?
CVE-2026-44945 is a critical vulnerability published on August 5, 2026. A privilege escalation vulnerability exists in Rancher's impersonation middleware (pkg/auth/requests/impersonate.go). An authenticated Rancher user with the default user global role can gain full administrative access to the Rancher control plane and transitively to all downstream clusters it…
When was CVE-2026-44945 disclosed?
CVE-2026-44945 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44945 actively exploited?
CVE-2026-44945 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 68.4% of all scored CVEs.
What is the CVSS score of CVE-2026-44945?
CVE-2026-44945 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-44945?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44945, 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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