Medium severity5.3NVD Advisory· Published Apr 3, 2026· Updated Apr 22, 2026
CVE-2026-34511
CVE-2026-34511
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openclawnpm | < 2026.4.2 | 2026.4.2 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/openclaw/openclaw/commit/a26f4d0f3ef0757db6c6c40277cc06a5de76c52fnvdPatchWEB
- github.com/advisories/GHSA-9jpj-g8vv-j5mfghsaADVISORY
- github.com/openclaw/openclaw/security/advisories/GHSA-9jpj-g8vv-j5mfnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-34511ghsaADVISORY
- www.vulncheck.com/advisories/openclaw-pkce-verifier-exposure-via-oauth-state-parameternvdThird Party AdvisoryWEB
News mentions
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