{"id":14540,"date":"2026-09-04T19:02:02","date_gmt":"2026-09-04T11:02:02","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-53517"},"modified":"2026-09-04T19:02:02","modified_gmt":"2026-09-04T11:02:02","slug":"cve-2026-53517","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-53517","title":{"rendered":"CVE-2026-53517 [HIGH] &#8211; Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta"},"content":{"rendered":"<p>Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta.7 until 1.6.11, the @better-auth\/oauth-provider POST \/oauth2\/token endpoint on the refresh_token grant performs a non-atomic read, validate, revoke, and mint sequence on the oauthRefreshToken row, allowing concurrent requests with the same parent refresh token to pass the revoked check and create forked refresh-token families; the vulnerable range also includes embedded better-auth plugin versions before 1.6.0. This issue is fixed in version 1.6.11.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta.7 until 1.6.11, the @better-auth\/oauth-provider POST \/oauth2\/token endpoint on the refresh_token grant perfor<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-14540","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/14540","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}