Critical · CVSS 9.6CVE-2026-91140

OS command injection in Progress Software Autonomous REST Connector GenAI AgentsCVE-2026-91140

Answer in brief

CVE-2026-91140 records a Critical severity (CVSS 9.6) vulnerability in OS command injection in Progress Software Autonomous REST Connector GenAI Agents. The current sources do not mark it as known exploited. The current feed maps Progress Software/Autonomous REST Connector GenAI Agents (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 6, 2026Updated Oct 6, 2026Source checked Oct 6, 2026First seen by HOL Oct 6, 2026Material review Oct 6, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.6
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Progress Software/Autonomous REST Connector GenAI Agents (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Progress Software/Autonomous REST Connector GenAI Agentsgeneric	>=2.0 <2.1	2.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for Progress Software/Autonomous REST Connector GenAI Agents.
Review the reported fix. Source-reported solution: Upgrade ARCGenAI-Generator to version 2.1 or later. Until the upgrade is applied, do not process untrusted Swagger/OpenAPI documents.

Evidence timeline and material changes

Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 6, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.