What’s Vulnerable › Vulnerabilities

CVE-2026-88020: Improper Neutralization of Input During Web Page Generation in OpenPLC Runtime v3

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-22 · updated 2026-09-23
• Weakness: CWE-79

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.

Affected products

• Autonomy Logic OpenPLC Runtime: 3

References

• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-265-09.json
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-265-09

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