{"id":"CVE-2021-4171","aliases":["EUVD-2022-0745","GHSA-xp7p-3gx7-j6wx","PYSEC-2026-307"],"status":"published","title":"Business Logic Errors in janeczku/calibre-web","description":"calibre-web is vulnerable to Business Logic Errors","severity":{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01433,"percentile":0.7344,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-840"],"published":"2022-01-17T09:45:10Z","modified":"2026-10-27T16:30:05Z","fixes":[{"ecosystem":"PyPI","package":"calibreweb","fixed_in":["0.6.15"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"calibreweb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.15"}]}]},{"source":"osv","ecosystem":"PyPI","package":"calibreweb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.15"}]}],"versions":["0.6.12","0.6.13","0.6.14"]},{"source":"osv","ecosystem":"PyPI","package":"calibreweb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.15"}]}],"versions":["0.6.12","0.6.13","0.6.14"]}],"products":[{"vendor":"janeczku","product":"calibre-web"},{"vendor":"janeczku","product":"janeczku/calibre-web"}],"references":[{"url":"https://huntr.dev/bounties/1117f439-133c-4563-afb2-6cd80607bd5c","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/janeczku/calibre-web/commit/3e0d8763c377d2146462811e3e4ccf13f0d312ce","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4171","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/calibreweb/PYSEC-2026-307.yaml","tags":["web"]},{"url":"https://pypi.org/project/calibreweb","tags":["web","package"]},{"url":"https://github.com/advisories/GHSA-xp7p-3gx7-j6wx","tags":["advisory"]},{"url":"https://github.com/janeczku/calibre-web","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-4171","title":"Business Logic Errors in janeczku/calibre-web","description":"calibre-web is vulnerable to Business Logic Errors","status":"published","published":"2022-01-17T09:45:10Z","modified":"2024-08-03T17:16:04.253Z","cvss":[{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-840"],"updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2022-0745","description":"calibre-web is vulnerable to Business Logic Errors","status":"published","published":"2022-01-17T09:45:10Z","modified":"2024-08-03T17:16:04Z","cvss":[{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:25:10.418596Z"}],"ghsa":[{"id":"GHSA-xp7p-3gx7-j6wx","title":"calibre-web is vulnerable to Business Logic Errors","description":"calibre-web is vulnerable to Business Logic Errors","status":"published","published":"2022-01-21T23:44:15Z","modified":"2026-10-27T16:16:33Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T14:41:37.912288Z"}],"nvd":[{"id":"CVE-2021-4171","description":"calibre-web is vulnerable to Business Logic Errors","status":"published","published":"2022-01-17T10:15:07.857Z","modified":"2026-06-17T04:19:09.173Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-840"],"updated_at":"2026-11-02T14:07:03.821385Z"}],"osv":[{"id":"CVE-2021-4171","description":"calibre-web is vulnerable to Business Logic Errors","status":"published","published":"2022-01-17T10:15:07.857Z","modified":"2026-10-20T10:54:58.967825947Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:21.557945Z"},{"id":"GHSA-xp7p-3gx7-j6wx","title":"calibre-web is vulnerable to Business Logic Errors","description":"calibre-web is vulnerable to Business Logic Errors","status":"published","published":"2022-01-21T23:44:15Z","modified":"2026-10-27T16:30:05.977964866Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:47:00.198893Z"},{"id":"PYSEC-2026-307","title":"calibre-web is vulnerable to Business Logic Errors","description":"calibre-web is vulnerable to Business Logic Errors","status":"published","published":"2026-06-29T11:50:33.865743Z","modified":"2026-07-01T20:22:50.165947Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:56.429374Z"}]}}