CVE-2026-50590

MEDIUMPre-NVD 4.54.5—
EchelonGraph scoreMEDIUM confidence

Score 4.5 from GitHub Security Advisory published 2026-06-05. a secondary CVSS source baseline 4.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.5Exploit: None knownExposed: 0

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

In Mimecast Incydr before 2.6.0, arbitrary file access can occur.

CVSS v3
4.5
EG Score
4.5(medium)
EG Risk
20(Track)
EG Risk 20/100SSVC: 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
Severity45% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

June 5, 2026

Last Modified

July 23, 2026

References (1)

Vendor Advisories for CVE-2026-50590(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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 149 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-50590?
CVE-2026-50590 is a medium vulnerability published on June 5, 2026. In Mimecast Incydr before 2.6.0, arbitrary file access can occur.
When was CVE-2026-50590 disclosed?
CVE-2026-50590 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50590 actively exploited?
CVE-2026-50590 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 99.5% of all scored CVEs.
What is the CVSS score of CVE-2026-50590?
CVE-2026-50590 has a CVSS v3 base score of 4.5 (NVD).
How do I remediate CVE-2026-50590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50590, 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-2026-50590

Explore →

Is Your Infrastructure Affected by CVE-2026-50590?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs