{"id":"CVE-2021-4164","aliases":["GHSA-wxr6-29pv-ch68","PYSEC-2026-621"],"title":"calibre-web is vulnerable to Cross-Site Request Forgery (CSRF)","summary":"calibre-web is vulnerable to Cross-Site Request Forgery (CSRF)","severity":"high","cvss":7.6,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","vendor":"calibreweb","product":"calibreweb","ecosystem":"pip","affected":["calibreweb < 0.6.15"],"patched":["calibreweb 0.6.15"],"published":"2022-01-21","updated":"2026-07-06","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-wxr6-29pv-ch68","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4164"},{"url":"https://github.com/janeczku/calibre-web/commit/785726deee13b4d56f6c3503dd57c1e3eb7d6f30"},{"url":"https://github.com/janeczku/calibre-web"},{"url":"https://huntr.dev/bounties/2debace1-a0f3-45c1-95fa-9d0512680758"}],"tags":["osv","pip"],"epss":0.00545,"epssPercentile":0.44379,"ingestedAt":"2026-07-08T18:25:53.940Z","slug":"CVE-2021-4164","body":"## Overview\n\ncalibre-web is vulnerable to Cross-Site Request Forgery (CSRF)\n\n## Affected packages\n\n- `calibreweb < 0.6.15`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `calibreweb 0.6.15`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}