CVE-2026-3691 MEDIUM

CVE-2026-3691: OpenClaw Client PKCE Verifier Information Disclosure Vulnerability

Vendor Openclaw
Product OpenClaw
Weakness CWE-200 · Info exposure
Published April 11, 2026
Last update April 13, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality High
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 11, 2026 CVE published
April 13, 2026 Record updated