{"cve":"CVE-2026-67332","nvd":{"published":"2026-08-01T13:17:03.973","modified":"2026-10-23T22:10:00.160","status":"Deferred","description":"@better-auth/oauth-provider before 1.7.0-beta.4 fails to bind access-token audience to the authorization grant, allowing clients to request tokens for unrelated resources. Attackers can complete an OAuth flow and obtain access tokens whose audience targets resource servers the authorization never covered, bypassing intended authorization boundaries.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","score":6.4},"cwes":["CWE-285"],"references":["https://github.com/better-auth/better-auth/security/advisories/GHSA-p2fr-6hmx-4528","https://www.vulncheck.com/advisories/better-auth-oauth-provider-before-beta-4-authorization-bypass"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:34.184483516+00:00"},"epss":{"cve":"CVE-2026-67332","score":0.0026,"percentile":0.17503,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-p2fr-6hmx-4528","url":"https://osv.dev/vulnerability/GHSA-p2fr-6hmx-4528","summary":"@better-auth/oauth-provider may provide access tokens for unauthorized audiences via unbound resource indicators","modified":"2026-09-10T03:50:12.269109487Z","packages":[{"ecosystem":"npm","name":"@better-auth/oauth-provider","purl":"pkg:npm/%40better-auth/oauth-provider","ranges":[">=1.4.8 <1.7.0-beta.4"],"fixed":["1.7.0-beta.4"]}]}],"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."]}