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CVE-2026-3691

5.3 · MEDIUM

OpenClaw Client PKCE Verifier Information Disclosure Vulnerability.

Published Apr 11, 2026CWE-200EPSS 0.41%

Overview

CVE-2026-3691 is a medium-severity vulnerability. It was published on April 11, 2026 and has a CVSS 3.0 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

OpenClaw Client PKCE Verifier Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose stored credentials on affected installations of OpenClaw. User interaction is required to exploit this vulnerability in that the target must initiate an OAuth authorization flow.

The specific flaw exists within the implementation of OAuth authorization. The issue results from the exposure of sensitive data in the authorization URL query string. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-29381.

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

GitHubgithub.com/openclaw/openclaw/security/advisories/GHSA-6g25-pc82-vfwpRefwww.zerodayinitiative.com/advisories/ZDI-26-229/

How CyberStrike helps

Frequently asked questions

What is CVE-2026-3691?

CVE-2026-3691 is a medium-severity vulnerability. It was published on April 11, 2026 and has a CVSS 3.0 base score of 5.3 (MEDIUM).

How severe is CVE-2026-3691?

This vulnerability has a CVSS 3.0 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-3691?

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-2026-3691?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-3691 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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