{"id":"EUVD-2026-18849","revision":"011663b5ac6d419ab033ad282671c63c","records":[{"revision":"011663b5ac6d419ab033ad282671c63c","observedAt":"2026-11-11T09:28:28.495+00:00","statement":{"source":"euvd","id":"EUVD-2026-18849","aliases":["CVE-2026-34511","GHSA-ch86-pxr9-j9h9"],"title":"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, …","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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","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,"severity":null}],"references":["https://github.com/openclaw/openclaw/security/advisories/GHSA-9jpj-g8vv-j5mf","https://github.com/openclaw/openclaw/commit/a26f4d0f3ef0757db6c6c40277cc06a5de76c52f","https://www.vulncheck.com/advisories/openclaw-pkce-verifier-exposure-via-oauth-state-parameter"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-18849","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 3, 2026, 8:45:41 PM","dateUpdated":"Sep 24, 2026, 2:17:31 PM"},"relatedAdvisories":[{"id":"WID-SEC-W-2026-0980","title":"OpenClaw: Mehrere Schwachstellen","vulnerabilityIds":["CVE-2026-34425","CVE-2026-34426","CVE-2026-34511","CVE-2026-41295","CVE-2026-41298","CVE-2026-41301","CVE-2026-41339","CVE-2026-41346","CVE-2026-41348","CVE-2026-41351","CVE-2026-41352","CVE-2026-41354","CVE-2026-41358","CVE-2026-41360","CVE-2026-41362","CVE-2026-41372","CVE-2026-41383","CVE-2026-41388","CVE-2026-41398","CVE-2026-41400","CVE-2026-41407"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-18849","identifiers":["EUVD-2026-18849","CVE-2026-34511","GHSA-ch86-pxr9-j9h9"]},"retained":false,"historicalAffected":[]}],"coverage":[]}