CVE-2026-59085

CRITICALPre-NVD 9.19.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-21. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.1Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Server-Side Request Forgery (SSRF) vulnerability in Apache CloudStack's webhook module, exploitable via webhook delivery requests.

This issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.

Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
56
EG Risk 56/100

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 (value × EchelonGraph’s weight)
Severity91% × 45%
The EG Score, 9.1 of 10.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 21, 2026

Last Modified

August 27, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
Fix named in the CVE record.

Vendor Advisories for CVE-2026-59085(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 21× in last 7d / 175× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 338 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 238 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 08:57 UTCEG score recompute
  2. 2026-10-14 08:57 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-10-13 05:26 UTCEG score recompute
  5. 2026-10-13 05:26 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  6. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-10-12 15:53 UTCEG score recompute
  8. 2026-10-12 06:40 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  9. 2026-10-11 19:36 UTCEG score recompute
  10. 2026-10-11 16:51 UTCEG score recompute
  11. 2026-10-11 14:14 UTCEG score recompute
  12. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  13. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  15. 2026-10-09 06:07 UTCEG score recompute
  16. 2026-10-09 06:06 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  18. 2026-10-08 08:51 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  19. 2026-10-08 04:59 UTCEG score recompute
  20. 2026-10-08 04:59 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  21. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  22. 2026-10-07 09:11 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  23. 2026-10-07 05:13 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  24. 2026-10-07 01:14 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  25. 2026-10-06 21:18 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
Show 75 more
  1. 2026-10-06 16:50 UTCEG score recompute
  2. 2026-10-06 16:50 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  3. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-10-06 12:14 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  5. 2026-10-06 07:49 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  6. 2026-10-06 03:06 UTCEG score recompute
  7. 2026-10-06 03:06 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  8. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-05 17:42 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  10. 2026-10-05 13:51 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  11. 2026-10-05 09:26 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  12. 2026-10-05 05:23 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  13. 2026-10-05 01:32 UTCEG score recompute
  14. 2026-10-05 01:32 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  16. 2026-10-04 20:49 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-10-04 14:41 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  18. 2026-10-04 10:12 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  19. 2026-10-04 06:21 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  20. 2026-10-04 02:31 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  21. 2026-10-03 20:47 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  22. 2026-10-03 16:43 UTCEG score recompute
  23. 2026-10-03 16:43 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  24. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  25. 2026-10-03 04:30 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  26. 2026-10-03 00:39 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  27. 2026-10-02 18:54 UTCEG score recompute
  28. 2026-10-02 18:54 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  29. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  30. 2026-10-02 14:55 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  31. 2026-10-02 11:04 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  32. 2026-10-02 06:46 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  33. 2026-10-02 01:20 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  34. 2026-10-01 21:26 UTCEG score recompute
  35. 2026-10-01 21:26 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  36. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  37. 2026-10-01 13:22 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  38. 2026-10-01 09:30 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  39. 2026-10-01 05:40 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  40. 2026-10-01 01:10 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  41. 2026-09-30 20:29 UTCEG score recompute
  42. 2026-09-30 20:29 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  43. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  44. 2026-09-30 11:54 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  45. 2026-09-30 07:58 UTCEG score recompute
  46. 2026-09-30 07:58 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  47. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  48. 2026-09-29 05:39 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  49. 2026-09-29 01:48 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  50. 2026-09-28 21:36 UTCEG score recompute
  51. 2026-09-28 21:36 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  52. 2026-09-28 13:59 UTCEG score recompute
  53. 2026-09-28 13:59 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  54. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  55. 2026-09-28 10:08 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  56. 2026-09-28 06:15 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  57. 2026-09-28 02:24 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  58. 2026-09-27 22:34 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  59. 2026-09-27 18:43 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  60. 2026-09-27 14:52 UTCEG score recompute
  61. 2026-09-27 14:51 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  62. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  63. 2026-09-27 10:59 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  64. 2026-09-27 06:50 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  65. 2026-09-27 02:35 UTCEG score recompute
  66. 2026-09-27 02:35 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  67. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  68. 2026-09-25 17:15 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  69. 2026-09-25 12:15 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  70. 2026-09-25 08:24 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  71. 2026-09-25 04:26 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  72. 2026-09-25 00:36 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  73. 2026-09-24 19:29 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1
  74. 2026-09-24 15:38 UTCEG score recompute
  75. 2026-09-24 15:38 UTCGHSA enrichmentGHSA-5c78-m4xc-xx66 · GitHub severity CRITICAL · GitHub CVSS 9.1

Frequently asked(5)

What is CVE-2026-59085?
CVE-2026-59085 is a critical-severity vulnerability; its CVE record was published on August 21, 2026. Server-Side Request Forgery (SSRF) vulnerability in Apache CloudStack's webhook module, exploitable via webhook delivery requests. This issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or…
When was the CVE record for CVE-2026-59085 published?
The CVE record for CVE-2026-59085 was published on August 21, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of August 27, 2026; the record at its source may have been updated since.
Is CVE-2026-59085 actively exploited?
CVE-2026-59085 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59085?
CVE-2026-59085 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-59085?
The CVE record for CVE-2026-59085 names the fix: "Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue." The vendor advisories EchelonGraph has for CVE-2026-59085 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-59085

Explore →

Is Your Infrastructure Affected by CVE-2026-59085?

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