{"cve":"CVE-2026-34511","nvd":{"published":"2026-04-03T21:17:11.517","modified":"2026-07-24T22:10:00.140","status":"Analyzed","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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.0},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-330"],"references":["https://github.com/openclaw/openclaw/commit/a26f4d0f3ef0757db6c6c40277cc06a5de76c52f","https://github.com/openclaw/openclaw/security/advisories/GHSA-9jpj-g8vv-j5mf","https://www.vulncheck.com/advisories/openclaw-pkce-verifier-exposure-via-oauth-state-parameter"],"products":["openclaw:openclaw"],"source":"nvd","synced_at":"2026-10-19T22:28:59.047572785+00:00"},"epss":{"cve":"CVE-2026-34511","score":0.00248,"percentile":0.16112,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-9jpj-g8vv-j5mf","url":"https://osv.dev/vulnerability/GHSA-9jpj-g8vv-j5mf","summary":"OpenClaw: Gemini OAuth exposed the PKCE verifier through the OAuth state parameter","modified":"2026-04-07T14:44:19.269908Z","packages":[{"ecosystem":"npm","name":"openclaw","purl":"pkg:npm/openclaw","ranges":["<2026.4.2"],"fixed":["2026.4.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}