{"id":"CVE-2026-71206","published":"2026-08-05T08:16:42.587","lastModified":"2026-08-10T12:17:24.367","description":"Shiori's CheckToken function (internal/domains/auth.go) validates only the JWT's HMAC signature and returns the embedded claims.Account object unmodified, never re-fetching the account from the database. No session store or token-revocation mechanism exists in the codebase.","cvssScore":8.3,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","cwes":["CWE-613"],"vendors":[],"products":[],"references":[{"url":"https://github.com/go-shiori/shiori","tags":[]}],"exploitRefs":[{"url":"https://github.com/go-shiori/shiori","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows attackers to manipulate JWT tokens and gain unauthorized access to user accounts without revalidating them from the database.","exploitability":"Exploitation requires knowledge of JWT token manipulation but does not need user interaction or elevated privileges.","blast_radius":"If exploited, it could lead to full account takeover for affected users, compromising sensitive data and potentially the entire application's security.","remediation":"Implement proper account validation by re-fetching the account from the database before using claims.Account object.","tags":["auth-bypass","jwt","security"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-08-11T06:48:56.210Z"}}