CVE-2026-34511 (GCVE-0-2026-34511)
Vulnerability from cvelistv5 – Published: 2026-04-03 20:45 – Updated: 2026-09-24 14:17 X_Open Source
VLAI
EPSS
VEX
Title
OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-06 16:56 UTC
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
VulnCheck
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | vendor-advisory |
| https://github.com/openclaw/openclaw/commit/a26f4… | patch |
| https://www.vulncheck.com/advisories/openclaw-pkc… | third-party-advisory |
Impacted products
Date Public
2026-04-02 00:00
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