CVE-2026-17191

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: HIGH) published 2026-07-27. A secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.1Exploit: None knownExposed services: Not assessed

These vulnerabilities have been fixed in the following releases: * VCO 5.2.3.14 and later in the 5.2 train (from the CVE record's solution, Arista Networks, Inc.) — apply it.

An input validation vulnerability exists in an API component of the orchestrator. An authenticated user can exploit this flaw to manipulate backend queries, which may result in unauthorized access to data beyond their intended privileges and cause the underlying system to initiate unintended outbound network connections.

This issue was discovered internally by Arista and the company is not aware of any malicious uses of this issue in customer networks.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
41
EG Risk 41/100

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.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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: These vulnerabilities have been fixed in the following releases: * VCO 5.2.3.14 and later in the 5.2 train (from the CVE record's solution, Arista Networks, Inc.). Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
26th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

These vulnerabilities have been fixed in the following releases: * VCO 5.2.3.14 and later in the 5.2 train (from the CVE record's solution, Arista Networks, Inc.). Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

July 27, 2026

Last Modified

July 30, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
Fix named in the CVE record's solution (Arista Networks, Inc.).

Vendor Advisories for CVE-2026-17191(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 17× in last 7d / 79× 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 395 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 295 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  2. 2026-10-14 02:48 UTCEG score recompute
  3. 2026-10-14 02:48 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  4. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  5. 2026-10-12 22:55 UTCEG score recompute
  6. 2026-10-12 22:55 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  7. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  8. 2026-10-12 16:29 UTCEG score recompute
  9. 2026-10-12 09:31 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  10. 2026-10-11 20:08 UTCEG score recompute
  11. 2026-10-11 17:21 UTCEG score recompute
  12. 2026-10-11 14:53 UTCEG score recompute
  13. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  14. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  15. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  16. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  17. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  18. 2026-10-07 02:28 UTCEG score recompute
  19. 2026-10-07 02:28 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  20. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  21. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  22. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  23. 2026-10-04 12:37 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  24. 2026-10-04 07:18 UTCEG score recompute
  25. 2026-10-04 07:18 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
Show 75 more
  1. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  2. 2026-10-03 03:13 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  3. 2026-10-02 18:27 UTCEG score recompute
  4. 2026-10-02 18:27 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  5. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  6. 2026-10-01 12:31 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  7. 2026-10-01 08:07 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  8. 2026-10-01 03:52 UTCEG score recompute
  9. 2026-10-01 03:52 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  10. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  11. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  12. 2026-09-29 07:53 UTCEG score recompute
  13. 2026-09-29 07:53 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  14. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  15. 2026-09-28 12:58 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  16. 2026-09-28 07:47 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  17. 2026-09-28 03:35 UTCEG score recompute
  18. 2026-09-28 03:35 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  19. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  20. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  21. 2026-09-25 06:52 UTCEG score recompute
  22. 2026-09-25 06:52 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  23. 2026-09-24 10:59 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  24. 2026-09-24 06:26 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  25. 2026-09-24 02:15 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  26. 2026-09-23 22:02 UTCEG score recompute
  27. 2026-09-23 22:02 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  28. 2026-09-23 10:25 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  29. 2026-09-23 06:13 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  30. 2026-09-23 02:02 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  31. 2026-09-22 21:49 UTCEG score recompute
  32. 2026-09-22 21:49 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  33. 2026-09-20 05:42 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  34. 2026-09-20 00:55 UTCEG score recompute
  35. 2026-09-20 00:55 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  36. 2026-09-19 08:17 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  37. 2026-09-18 23:05 UTCEG score recompute
  38. 2026-09-18 23:05 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  39. 2026-09-18 19:27 UTCEPSS rescoreEPSS 2.8% · 85th percentile
  40. 2026-09-18 18:53 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  41. 2026-09-18 10:47 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  42. 2026-09-18 06:35 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  43. 2026-09-18 02:23 UTCEG score recompute
  44. 2026-09-18 02:23 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  45. 2026-09-17 09:10 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  46. 2026-09-17 01:46 UTCEG score recompute
  47. 2026-09-17 01:46 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  48. 2026-09-16 14:07 UTCEPSS rescoreEPSS 2.8% · 85th percentile
  49. 2026-09-16 11:53 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  50. 2026-09-16 06:16 UTCEG score recompute
  51. 2026-09-16 06:16 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  52. 2026-09-16 05:14 UTCEPSS rescoreEPSS 2.8% · 85th percentile
  53. 2026-09-15 09:08 UTCEG score recompute
  54. 2026-09-15 09:08 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  55. 2026-09-14 15:42 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  56. 2026-09-14 09:30 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  57. 2026-09-14 05:18 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  58. 2026-09-14 01:07 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  59. 2026-09-13 20:55 UTCEG score recompute
  60. 2026-09-13 20:55 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  61. 2026-09-13 16:46 UTCEPSS rescoreEPSS 2.8% · 85th percentile
  62. 2026-09-13 15:22 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  63. 2026-09-13 11:10 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  64. 2026-09-13 06:25 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  65. 2026-09-13 02:14 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  66. 2026-09-12 21:55 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  67. 2026-09-12 17:38 UTCEG score recompute
  68. 2026-09-12 17:38 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  69. 2026-09-12 15:00 UTCEPSS rescoreEPSS 2.8% · 85th percentile
  70. 2026-09-12 13:19 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  71. 2026-09-12 09:08 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  72. 2026-09-12 04:56 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  73. 2026-09-12 00:44 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  74. 2026-09-11 20:26 UTCGHSA enrichmentGHSA-h4j3-v76m-hmm4 · GitHub severity HIGH · GitHub CVSS 9.1
  75. 2026-09-11 15:52 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-17191?
CVE-2026-17191 is a critical-severity vulnerability; its CVE record was published on July 27, 2026. An input validation vulnerability exists in an API component of the orchestrator. An authenticated user can exploit this flaw to manipulate backend queries, which may result in unauthorized access to data beyond their intended privileges and cause the underlying system to initiate unintended…
When was CVE-2026-17191 made public?
CVE-2026-17191 was made public on July 27, 2026: that is the date its CVE record's CNA, Arista Networks, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 27, 2026. EchelonGraph's copy of the record carries a last-modified date of July 30, 2026; the record at its source may have been updated since.
Is CVE-2026-17191 actively exploited?
CVE-2026-17191 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-17191?
CVE-2026-17191 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-17191?
The CVE record's solution for CVE-2026-17191, written by its CNA Arista Networks, Inc., names the fix: "These vulnerabilities have been fixed in the following releases: * VCO 5.2.3.14 and later in the 5.2 train". The vendor advisories EchelonGraph has for CVE-2026-17191 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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