ZDI-CAN-29381: ZDI-26-229: OpenClaw Client PKCE Verifier Information Disclosure Vulnerability

Published Mar 30, 2026
·
Updated

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.

Other sources

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 ZDI has assigned a CVSS rating of 5.3. The following CVEs are assigned: CVE-2026-3691.

ZDI

Affected Software

2 affected components
OpenClaw OpenClaw Client
OpenClaw OpenClaw

Event History

Mar 30, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Apr 11, 2026
Advisory Published
via ZDI·01:00 AM
Data Sourced
via ZDI·01:00 AM
SeverityAffected Software

Contact

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