{"id":14535,"date":"2026-09-04T19:02:02","date_gmt":"2026-09-04T11:02:02","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-53512"},"modified":"2026-09-04T19:02:02","modified_gmt":"2026-09-04T11:02:02","slug":"cve-2026-53512","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-53512","title":{"rendered":"CVE-2026-53512 [CRITICAL] &#8211; Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11"},"content":{"rendered":"<p>Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the legacy oidcProvider and mcp plugins expose OAuth token endpoints whose refresh_token grant authenticates only possession of the bound refreshToken row and matching client_id, without verifying the confidential client&#8217;s client_secret, allowing an attacker with a valid refresh_token to mint access tokens and rotated refresh tokens through \/api\/auth\/oauth2\/token or \/api\/auth\/mcp\/token. The @better-auth\/oauth-provider package is not affected. 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. Prior to 1.6.11, the legacy oidcProvider and mcp plugins expose OAuth token endpoints whose refresh_token grant authenticates<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-14535","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/14535","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=14535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}