CVE-2026-50891

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-15. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: Elevated riskExposed: 0

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

Incorrect access control in the /admin/api/config component of Filestash v0.4.0 allows attackers to escalate privileges via sending a crafted request.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
52(Track*)
EG Risk 52/100SSVC: 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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 16, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

Reference for CVE-2026-50891 · GitHub

https://gist.github.com/pyuysig/50dc365f54f95396bb67532f02b34bb0

Vendor Advisories for CVE-2026-50891(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
gogithub.com/mickael-kerjean/filestash—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/mickael-kerjean/filestash———

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 41× 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 232 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Same product

2 shown

go:github.com/mickael-kerjean/filestash

Frequently asked(5)

What is CVE-2026-50891?
CVE-2026-50891 is a high vulnerability published on June 15, 2026. Incorrect access control in the /admin/api/config component of Filestash v0.4.0 allows attackers to escalate privileges via sending a crafted request.
When was CVE-2026-50891 disclosed?
CVE-2026-50891 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50891 actively exploited?
CVE-2026-50891 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 74.4% of all scored CVEs.
What is the CVSS score of CVE-2026-50891?
CVE-2026-50891 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-50891?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50891, 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

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