CVE-2026-34511— OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter
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I. Basic Information for CVE-2026-34511
Vulnerability Information
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Vulnerability Title
OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenClaw before 2026.4.2 reuses the PKCE verifier as the OAuth state parameter in the Gemini OAuth flow, exposing it through the redirect URL. Attackers who capture the redirect URL can obtain both the authorization code and PKCE verifier, defeating PKCE protection and enabling token redemption.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用不充分的随机数
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenClaw 安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenClaw是OpenClaw开源的一个智能人工助理。 OpenClaw 2026.4.2之前版本存在安全特征问题漏洞，该漏洞源于在Gemini OAuth流程中重用PKCE验证器作为状态参数，可能导致PKCE保护失效并获取令牌。
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
II. Public POCs for CVE-2026-34511
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IV. Related Vulnerabilities
Same product: OpenClaw
- CVE-2026-44118
OpenClaw < 2026.4.22 - Owner Context Spoofing via Bearer Tok - CVE-2026-44116
OpenClaw < 2026.4.22 - Server-Side Request Forgery in Zalo P - CVE-2026-44117
OpenClaw < 2026.4.20 - Server-Side Request Forgery in QQBot - CVE-2026-44115
OpenClaw < 2026.4.22 - Shell Expansion Bypass in Unquoted He - CVE-2026-44114
OpenClaw < 2026.4.20 - Environment Variable Namespace Collis
Same vendor: OpenClaw
- CVE-2026-44118
OpenClaw < 2026.4.22 - Owner Context Spoofing via Bearer Tok - CVE-2026-44117
OpenClaw < 2026.4.20 - Server-Side Request Forgery in QQBot - CVE-2026-44116
OpenClaw < 2026.4.22 - Server-Side Request Forgery in Zalo P - CVE-2026-44115
OpenClaw < 2026.4.22 - Shell Expansion Bypass in Unquoted He - CVE-2026-44114
OpenClaw < 2026.4.20 - Environment Variable Namespace Collis
Same weakness: CWE-330
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chatchat-space Langchain-Chatchat Uploaded File openai_route - CVE-2026-40975
VMware Spring Boot 安全特征问题漏洞 - CVE-2026-40496
FreeScout has Predictable Attachment Token that Allows Unaut - CVE-2026-40306
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Chamilo LMS has Weak REST API Key Generation (Predictable)
V. Comments for CVE-2026-34511
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