{"id":"CVE-2021-4171","aliases":["GHSA-xp7p-3gx7-j6wx","PYSEC-2026-307"],"url":"https://o3.security/vulnerability/CVE-2021-4171","summary":"calibre-web is vulnerable to Business Logic Errors","details":"calibre-web is vulnerable to Business Logic Errors","published":"2022-01-17T10:15:07.857Z","modified":"2026-07-09T03:25:26.106018Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"calibreweb","fixedVersion":"0.6.15"}],"fix":{"url":"https://github.com/janeczku/calibre-web/commit/3e0d8763c377d2146462811e3e4ccf13f0d312ce","label":"janeczku/calibre-web@3e0d876"},"references":[{"type":"FIX","url":"https://github.com/janeczku/calibre-web/commit/3e0d8763c377d2146462811e3e4ccf13f0d312ce"},{"type":"FIX","url":"https://huntr.dev/bounties/1117f439-133c-4563-afb2-6cd80607bd5c"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T03:25:26.106018Z"}}