What is CVE-2026-88020?

CVE-2026-88020 is a medium-severity vulnerability in Autonomy Logic Openplc Runtime, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-22.

How severe is CVE-2026-88020?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Autonomy Logic Openplc Runtime

CVE-2026-88020

Autonomy Logic OpenPLC 3 is susceptible to an improper neutralization of input during web page generation vulnerability when the web interface attempts to route the program based on a query string parameter with no encoding.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-22.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Autonomy Logic Openplc Runtime — versions 3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-88020?: CVE-2026-88020 is a medium-severity vulnerability in Autonomy Logic Openplc Runtime, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-22.
How severe is CVE-2026-88020?: Medium severity. CVSS v3 base score is 6.1 out of 10.