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CVE-2026-34511

CVE-2026-34511 · OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.0 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • openclaw

    Versions
    • ≥ 0, < 2026.4.2: Affected (semver)
    • 2026.4.2: Not affected (semver)

    Update to 2026.4.2

  • openclaw npm

    Affected ranges
    • SEMVER: < 2026.4.2

    Update to 2026.4.2

Original sources

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