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

Quick assessment

Affected
OpenClaw OpenClaw
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenClaw是OpenClaw开源的一个智能人工助理。 OpenClaw存在信息泄露漏洞，该漏洞源于授权URL查询字符串暴露敏感数据，可能导致凭据泄露。

AI Predicted 7.5 Difficulty: Easy EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1539 · Steal Web Session Cookie
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I. Basic Information for CVE-2026-3691

Vulnerability Information
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Vulnerability Title
OpenClaw Client PKCE Verifier Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
OpenClaw 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenClaw是OpenClaw开源的一个智能人工助理。 OpenClaw存在信息泄露漏洞，该漏洞源于授权URL查询字符串暴露敏感数据，可能导致凭据泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenClaw OpenClaw 2026.2.21 -

II. Public POCs for CVE-2026-3691

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III. Intelligence Information for CVE-2026-3691

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Vendor Advisories for CVE-2026-3691 (2)

Same Patch Batch · OpenClaw · 2026-04-11 · 3 CVEs total

CVE-2026-3690 OpenClaw Canvas Authentication Bypass Vulnerability
CVE-2026-3689 OpenClaw Canvas Path Traversal Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: OpenClaw
Same vendor: OpenClaw
Same weakness: CWE-200

V. Comments for CVE-2026-3691

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