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.
Metrics
Affected Vendors & Products
References
History
Mon, 06 Apr 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Fri, 03 Apr 2026 21:30:00 +0000
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| 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. | |
| Title | OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter | |
| First Time appeared |
Openclaw
Openclaw openclaw |
|
| Weaknesses | CWE-330 | |
| CPEs | cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
Openclaw
Openclaw openclaw |
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| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-04-03T20:45:41.499Z
Updated: 2026-04-06T16:57:09.160Z
Reserved: 2026-03-30T13:51:47.549Z
Link: CVE-2026-34511
Updated: 2026-04-06T16:56:57.771Z
Status : Awaiting Analysis
Published: 2026-04-03T21:17:11.517
Modified: 2026-04-07T13:20:55.200
Link: CVE-2026-34511
No data.
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