VULNERABILITY INTELLIGENCE

CVE-2026-34511

CVSS score5.3 MEDIUM
EPSS probability0.25%
CISA KEVNot currently listed
Published2026-04-03
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-330

Primary references