Improper Input Neutralization in Autonomy Logic OpenPLC 3
CVE-2026-88020

5.3MEDIUM

Key Information:

Vendor

Autonomy Logic

Status
Openplc Runtime
Vendor
CVE Published:
22 September 2026

What is CVE-2026-88020?

Autonomy Logic OpenPLC 3 is at risk due to a vulnerability that occurs when improper neutralization of user input is implemented during web page generation. This flaw arises when the web interface processes a routing program based on query string parameters without appropriate encoding. Attackers could exploit this vulnerability to manipulate the functionality of the web interface, potentially leading to unauthorized access or actions within the automation environment.

Affected Version(s)

OpenPLC Runtime 3

OpenPLC Runtime 4

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-2...
https://github.com/cisagov/CSAF/blob/develop/csaf_files/O...

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Rajivarnan R. reported this vulnerability to CISA.
Shirshak of Secnora reported this vulnerability to CISA.
.