CVE-2026-88020

Improper Neutralization of Input During Web Page Generation in OpenPLC Runtime v3

Published Sep 22, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Autonomy Logic recommends users upgrade to OpenPLC v4 as OpenPLC v3 is end-of-life and is no longer receiving patches, bug fixes, or security updates.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Autonomy Logic
Autonomy Logic openplc Runtime
Vendors & Products Autonomy Logic
Autonomy Logic openplc Runtime
Type Values Removed Values Added
Description 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.
Title Improper Neutralization of Input During Web Page Generation in OpenPLC Runtime v3
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Sep 23, 2026, 3:05 PM
Reserved
Sep 9, 2026, 7:31 PM
Status
Awaiting Analysis
Published
Sep 22, 2026, 9:17 PM
Modified
Sep 23, 2026, 7:42 PM