{"id":"CVE-2026-32246","aliases":["GHSA-3q28-qjrv-qr39","GO-2026-4688"],"url":"https://o3.security/vulnerability/CVE-2026-32246","summary":"Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint","details":"Tinyauth is an authentication and authorization server. Prior to 5.0.3, the OIDC authorization endpoint allows users with a TOTP-pending session (password verified, TOTP not yet completed) to obtain authorization codes. An attacker who knows a user's password but not their TOTP secret can obtain valid OIDC tokens, completely bypassing the second factor. This vulnerability is fixed in 5.0.3.","published":"2026-03-12T18:59:20.875Z","modified":"2026-07-31T18:30:56.691840947Z","cvss":{"score":8.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/steveiliop56/tinyauth","fixedVersion":"1.0.1-20260311144920-9eb2d33064b7"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32246.json"},{"type":"ADVISORY","url":"https://github.com/steveiliop56/tinyauth/security/advisories/GHSA-3q28-qjrv-qr39"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32246"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-31T18:30:56.691840947Z"}}