Critical severity · published Oct 6, 2026
CVE-2026-91140
OS command injection in Progress Software Autonomous REST Connector GenAI Agents
9.6
CVSS
2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
Autonomous REST Connector GenAI Agents · Progress Software
2.0 before 2.1 · source: vendor
Affected product
AR
Autonomous REST Connector GenAI Agents
Progress Software
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91140
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91140
patch
https://github.com/progress/datadirect-arc-ai-model-gen/commit/7ede6d96eb033d647ffdcabf8d8069c098293575
vendor-advisory
https://community.progress.com/s/article/Progress-DataDirect-Critical-Security-Alert-Bulletin-September-2026-CVE-2026-91140