{"id":"CVE-2026-46715","aliases":["GHSA-97r5-pg8x-p63p","PYSEC-2026-2478"],"url":"https://o3.security/vulnerability/CVE-2026-46715","summary":"Flask-Security-Too OAuth reauthentication freshness bypass via cross- user OAuth identity acceptance","details":"Flask-Security-Too allows users to add security features to their Flask applicationa. Version 5.8.0's OAuth reauthentication flow can mark a session as fresh after verifying an OAuth account that belongs to a different user. If an attacker can operate an already-authenticated but stale victim session, they can complete OAuth verification using their own OAuth identity. The victim session is then treated as recently reauthenticated, allowing freshness-protected account actions to proceed. Version 5.8.1 contains a fix for this issue.","published":"2026-07-20T17:10:27.014Z","modified":"2026-08-12T03:51:21.460426626Z","cvss":null,"epss":{"score":0.00279,"percentile":0.20464,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"flask-security-too","fixedVersion":"5.8.1"}],"fix":{"url":"https://github.com/pallets-eco/flask-security/commit/8e69f3a94a463c0e8ddc46e31743717559fd8d48","label":"pallets-eco/flask-security@8e69f3a"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46715.json"},{"type":"ADVISORY","url":"https://github.com/pallets-eco/flask-security/security/advisories/GHSA-97r5-pg8x-p63p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46715"},{"type":"FIX","url":"https://github.com/pallets-eco/flask-security/commit/8e69f3a94a463c0e8ddc46e31743717559fd8d48"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:21.460426626Z"}}