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CVE-2026-35063

8.8 · HIGH

OpenPLC_V3 REST API endpoint checks for JWT presence but never verifies the caller's role.

Published Apr 9, 2026CWE-862EPSS 0.43%

Overview

CVE-2026-35063 is a high-severity vulnerability. It was published on April 9, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

OpenPLC_V3 REST API endpoint checks for JWT presence but never verifies the caller's role. Any authenticated user with role=user can delete any other user, including administrators, by specifying their user ID or they can create new accounts with role=admin, escalating to full administrator access.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

CISAwww.cisa.gov/news-events/ics-advisories/icsa-25-345-10

How CyberStrike helps

Frequently asked questions

What is CVE-2026-35063?

CVE-2026-35063 is a high-severity vulnerability. It was published on April 9, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-35063?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-35063?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-35063?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-35063 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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