{"affected":[{"product":"2FAuth","source":"CNA: GitHub_M","vendor":"Bubka","versions":[{"status":"affected","version":"< 8.0.0"}]}],"cveId":"CVE-2026-63437","cwes":["CWE-639","CWE-862"],"description":"2FAuth is a web app to manage Two-Factor Authentication (2FA) accounts and generate their security codes. Prior to 8.0.0, the recipients() method in app/Api/v1/Controllers/TwoFAccountShareController.php receives a caller-selected TwoFAccount through Laravel model binding but does not call the manageShares authorization policy before listing its recipients. When account sharing is enabled, an authenticated user can call GET /api/v1/twofaccounts/{victimId}/recipients for accounts owned by other users, enumerate registered user IDs and display names, test exact email addresses with filter[nameOrEmail], and inspect each account's sharing relationships. This issue is fixed in version 8.0.0.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.5,"severity":"medium","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}],"modifiedAt":1793996165692,"publishedAt":1793996165692,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Bubka/2FAuth/security/advisories/GHSA-m52c-63g8-qg5c"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/Bubka/2FAuth/commit/08753afbd847da8fa285e2ad857693ff88e46b84"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/Bubka/2FAuth/releases/tag/v8.0.0"}],"remediation":[],"revision":"4582ec69dcb0322805b41fea12570d0659993f372b435598e5103a1540179e69","sources":[{"modifiedAt":1793996165692,"name":"CNA: GitHub_M","retrievedAt":1793999370269,"url":"https://www.cve.org/CVERecord?id=CVE-2026-63437"}],"ssvc":null,"status":"published","title":"2FAuth: Missing Authorization on Share Recipients Endpoint Allows Cross-User Account Enumeration","updatedAt":1793999370269}