CVE-2026-34511

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/openclaw/openclaw/commit/a26f4d0f3ef0757db6c6c40277cc06a5de76c52f
https://github.com/openclaw/openclaw/security/advisories/GHSA-9jpj-g8vv-j5mf
https://www.vulncheck.com/advisories/openclaw-pkce-verifier-exposure-via-oauth-state-parameter

Configurations

No configuration.

History

03 Apr 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-03 21:17

Updated : 2026-04-07 13:20

NVD link : CVE-2026-34511

Mitre link : CVE-2026-34511

CVE.ORG link : CVE-2026-34511

JSON object : View

Products Affected

No product.

CWE

CWE-330

Use of Insufficiently Random Values

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