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CVE-2026-34511
5.3 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): HIGH
- Privileges required (PR): NONE
- User interaction (UI): REQUIRED
- Scope (S): UNCHANGED
- Confidentiality impact (C): HIGH
- Integrity impact (I): NONE
- Availability impact (A): NONE
Activity log
- Created suggestion
OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter
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.
References
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GitHub Security Advisory (GHSA-9jpj-g8vv-j5mf) vendor-advisory
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Patch Commit patch
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https://www.vulncheck.com/advisories/openclaw-pkce-verifier-exposure-via-oauth-… third-party-advisory
Affected products
OpenClaw
- <2026.4.2
- ==2026.4.2
Package maintainers
-
@chrisportela Chris Portela <chris@chrisportela.com>