{"action":"Upgrade calibreweb to 0.6.15 or later.","affected":[{"fixed":"0.6.15","introduced":"0"}],"component":"calibreweb","cve_ids":["CVE-2021-4164"],"ecosystem":"PyPI","epss":0.00545,"exploited":false,"fixed_versions":["0.6.15"],"ghsa_id":"GHSA-wxr6-29pv-ch68","id":"tcs_01M5KHCGR2JPW28YQKQVE8FGYC","modified_at":"2026-07-06T08:00:10.398909186Z","published_at":"2026-07-02T14:13:14.881686Z","references":["https://osv.dev/vulnerability/PYSEC-2026-621","https://nvd.nist.gov/vuln/detail/CVE-2021-4164","https://github.com/janeczku/calibre-web/commit/785726deee13b4d56f6c3503dd57c1e3eb7d6f30","https://github.com/janeczku/calibre-web","https://huntr.dev/bounties/2debace1-a0f3-45c1-95fa-9d0512680758","https://pypi.org/project/calibreweb","https://github.com/advisories/GHSA-wxr6-29pv-ch68"],"severity":{"label":"high","score":7.6},"sources":[{"source":"osv","source_id":"PYSEC-2026-621","url":"https://osv.dev/vulnerability/PYSEC-2026-621"}],"summary":"calibre-web is vulnerable to Cross-Site Request Forgery (CSRF)"}