{"id":"GHSA-xp7p-3gx7-j6wx","aliases":["CVE-2021-4171","PYSEC-2026-307"],"title":"calibre-web is vulnerable to Business Logic Errors","description":"calibre-web is vulnerable to Business Logic Errors","severity":"critical","score":9.8,"published":"2022-01-21T23:44:15.000Z","modified":"2026-10-27T16:30:05.977Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"PyPI","name":"calibreweb","ranges":[{"events":[{"introduced":"0"},{"fixed":"0.6.15"}],"type":"ECOSYSTEM"}],"versions":["0.6.12","0.6.13","0.6.14"],"fixed":["0.6.15"]}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2021-4171","https://github.com/janeczku/calibre-web/commit/3e0d8763c377d2146462811e3e4ccf13f0d312ce","https://github.com/janeczku/calibre-web","https://github.com/pypa/advisory-database/tree/main/vulns/calibreweb/PYSEC-2026-307.yaml","https://huntr.dev/bounties/1117f439-133c-4563-afb2-6cd80607bd5c","https://pypi.org/project/calibreweb"],"sources":[{"name":"OSV","id":"GHSA-xp7p-3gx7-j6wx","modified":"2026-10-27T16:30:05.977964866Z","url":"https://osv.dev/vulnerability/GHSA-xp7p-3gx7-j6wx"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8}]}