CVE-2026-91140

CRITICALPre-NVD 9.69.6
EchelonGraph scoreHIGH confidence

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

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-06. A secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week
9.6EG
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: 1.9%CVSS: 9.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (Progress Software Corporation) states them: "Upgrade ARCGenAI-Generator to version 2.1 or later."

An OS command injection vulnerability in the shell-based temporary-file cleanup instructions in Progress Software Autonomous REST Connector GenAI Agents ARCGenAI-Generator version 2.0 allows an attacker who supplies a crafted Swagger/OpenAPI document to execute arbitrary commands on a developer's machine when a user invokes the generator.

CVSS v3
9.6
EG Score
9.6CRITICALhigh confidence
EG Risk
44
EG Risk 44/100

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)
Severity96% × 45%
The EG Score, 9.6 of 10.
Exploitation1.9% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
1.9%
EPSS %ILE
79th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)14 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 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

October 6, 2026

Last Modified

October 7, 2026

Advisory Details (2)

Auto-updated Oct 7, 2026
Patch available. Sources: github_commit.
GitHub commit Patch Available

commit 7ede6d96eb03 (progress/datadirect-arc-ai-model-gen)

Patch available: progress/datadirect-arc-ai-model-gen v2.1 (contains commit 7ede6d96eb03)

https://github.com/progress/datadirect-arc-ai-model-gen/commit/7ede6d96eb033d647ffdcabf8d8069c098293575
Web page

Progress Customer Community

https://community.progress.com/s/article/Progress-DataDirect-Critical-Security-Alert-Bulletin-September-2026-CVE-2026-91140

Vendor Advisories for CVE-2026-91140(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 59× in last 7d / 59× 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.

  1. 2026-10-12 21:35 UTCEG score recompute
  2. 2026-10-12 21:35 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  3. 2026-10-12 16:35 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  4. 2026-10-12 14:46 UTCEG score recompute
  5. 2026-10-12 04:31 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  6. 2026-10-12 00:23 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  7. 2026-10-11 20:18 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  8. 2026-10-11 19:13 UTCEG score recompute
  9. 2026-10-11 16:30 UTCEG score recompute
  10. 2026-10-11 16:16 UTCEG score recompute
  11. 2026-10-11 16:15 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  12. 2026-10-11 13:50 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  13. 2026-10-11 13:44 UTCEG score recompute
  14. 2026-10-11 12:13 UTCEG score recompute
  15. 2026-10-11 12:12 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  16. 2026-10-11 08:07 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  17. 2026-10-11 04:05 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  18. 2026-10-11 00:02 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  19. 2026-10-10 20:01 UTCEG score recompute
  20. 2026-10-10 20:01 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  21. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  22. 2026-10-10 15:59 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  23. 2026-10-10 11:57 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  24. 2026-10-10 07:55 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  25. 2026-10-10 03:52 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
Show 34 more
  1. 2026-10-09 23:51 UTCEG score recompute
  2. 2026-10-09 23:51 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  3. 2026-10-09 20:08 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  4. 2026-10-09 19:50 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  5. 2026-10-09 15:48 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  6. 2026-10-09 11:46 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  7. 2026-10-09 07:43 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  8. 2026-10-09 03:41 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  9. 2026-10-08 23:39 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  10. 2026-10-08 19:38 UTCEG score recompute
  11. 2026-10-08 19:38 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  12. 2026-10-08 17:14 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  13. 2026-10-08 15:17 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  14. 2026-10-08 09:03 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  15. 2026-10-08 05:02 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  16. 2026-10-08 01:00 UTCEG score recompute
  17. 2026-10-08 01:00 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  19. 2026-10-07 20:58 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  20. 2026-10-07 16:56 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  21. 2026-10-07 12:32 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  22. 2026-10-07 08:27 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  23. 2026-10-07 04:20 UTCEG score recompute
  24. 2026-10-07 04:20 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  25. 2026-10-07 04:02 UTCEG score recompute
  26. 2026-10-07 04:02 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  27. 2026-10-07 03:33 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  28. 2026-10-06 23:29 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  29. 2026-10-06 19:28 UTCEG score recompute
  30. 2026-10-06 19:28 UTCGHSA enrichmentGHSA-w86g-q6vw-5mw6 · GitHub severity CRITICAL · GitHub CVSS 9.6
  31. 2026-10-06 14:30 UTCEG score recompute
  32. 2026-10-06 14:10 UTCEG score recompute
  33. 2026-10-06 13:50 UTCEG score recomputeFirst assessed: 9.6 CRITICAL
  34. 2026-10-06 13:49 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-91140?
CVE-2026-91140 is a critical-severity vulnerability; its CVE record was published on October 6, 2026. An OS command injection vulnerability in the shell-based temporary-file cleanup instructions in Progress Software Autonomous REST Connector GenAI Agents ARCGenAI-Generator version 2.0 allows an attacker who supplies a crafted Swagger/OpenAPI document to execute arbitrary commands on a developer's…
When was the CVE record for CVE-2026-91140 published?
The CVE record for CVE-2026-91140 was published on October 6, 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 October 7, 2026; the record at its source may have been updated since.
Is CVE-2026-91140 actively exploited?
CVE-2026-91140 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% probability of exploitation in the next 30 days (79th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-91140?
CVE-2026-91140 has a CVSS base score of 9.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-91140?
A fix for CVE-2026-91140 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (Progress Software Corporation) states them: "Upgrade ARCGenAI-Generator to version 2.1 or later." The vendor advisories EchelonGraph has for CVE-2026-91140 are linked in the Vendor Advisories panel on this page.

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