CVE-2026-50886

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-15. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
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: 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 webhook management component of Project Firefly III v6.5.9 allows attackers to scan internal resources via a crafted POST request.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
72(Attend)
EG Risk 72/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
24%
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-2026-50886 · GitHub

https://gist.github.com/pyuysig/f5395f90753ba652835ba9c6abf4c4ae

Vendor Advisories for CVE-2026-50886(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 28× in last 7d / 127× 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 223 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-50886?
CVE-2026-50886 is a critical vulnerability published on June 15, 2026. Incorrect access control in the webhook management component of Project Firefly III v6.5.9 allows attackers to scan internal resources via a crafted POST request.
When was CVE-2026-50886 disclosed?
CVE-2026-50886 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-2026-50886 actively exploited?
CVE-2026-50886 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 76.4% of all scored CVEs.
What is the CVSS score of CVE-2026-50886?
CVE-2026-50886 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-50886?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50886, 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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