CVE-2026-34511
OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
8th
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.
| CWE | CWE-330 |
| Vendor | openclaw |
| Product | openclaw |
| Published | Apr 3, 2026 |
| Last Updated | Apr 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
OpenClaw / OpenClaw
0 < 2026.4.2
References
Credits
🔍 RaaX