CVE-2026-40050

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-21. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

CrowdStrike has released security updates to address a critical unauthenticated path traversal vulnerability (CVE-2026-40050) in LogScale. This vulnerability only requires mitigation by customers that host specific versions of LogScale and does not affect Next-Gen SIEM customers. The vulnerability exists in a specific cluster API endpoint that, if exposed, allows a remote attacker to read arbitrary files from the server filesystem without authentication.

Next-Gen SIEM customers are not affected and do not need to take any action. CrowdStrike mitigated the vulnerability for LogScale SaaS customers by deploying network-layer blocks to all clusters on April 7, 2026. We have proactively reviewed all log data and there is no evidence of exploitation.

LogScale Self-hosted customers should upgrade to a patched version immediately to remediate the vulnerability.

CrowdStrike identified this vulnerability during continuous and ongoing product testing.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

April 21, 2026

Last Modified

April 22, 2026

Advisory Details (1)

Auto-updated Sep 9, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

CVE-2026-40050 — CrowdStrike LogScale Unauthenticated Path Traversal

https://www.crowdstrike.com/en-us/security-advisories/cve-2026-40050/

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 27× 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 253 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-40050?
CVE-2026-40050 is a critical vulnerability published on April 21, 2026. CrowdStrike has released security updates to address a critical unauthenticated path traversal vulnerability (CVE-2026-40050) in LogScale. This vulnerability only requires mitigation by customers that host specific versions of LogScale and does not affect Next-Gen SIEM customers. The vulnerability…
When was CVE-2026-40050 disclosed?
CVE-2026-40050 was first published in the National Vulnerability Database on April 21, 2026, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40050 actively exploited?
CVE-2026-40050 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 53.3% of all scored CVEs.
What is the CVSS score of CVE-2026-40050?
CVE-2026-40050 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-40050?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40050, 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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