{"action":"Upgrade pypdf to 6.7.1 or later.","affected":[{"fixed":"6.7.1","introduced":"0"}],"component":"pypdf","cve_ids":["CVE-2026-27026"],"ecosystem":"PyPI","epss":0.00191,"exploited":false,"fixed_versions":["6.7.1"],"ghsa_id":"GHSA-9mvc-8737-8j8h","id":"tcs_01M5KFB7FTJT02NM9AD324T6X5","modified_at":"2026-09-10T03:50:34.680998937Z","published_at":"2026-02-18T22:41:24Z","references":["https://osv.dev/vulnerability/GHSA-9mvc-8737-8j8h","https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mvc-8737-8j8h","https://nvd.nist.gov/vuln/detail/CVE-2026-27026","https://github.com/py-pdf/pypdf/pull/3644","https://github.com/py-pdf/pypdf/commit/7905842d833f899f1d3228af7e7467ad80277016","https://github.com/py-pdf/pypdf","https://github.com/py-pdf/pypdf/releases/tag/6.7.1"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"GHSA-9mvc-8737-8j8h","url":"https://osv.dev/vulnerability/GHSA-9mvc-8737-8j8h"},{"source":"nvd","source_id":"CVE-2026-27026","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27026"}],"summary":"pypdf possibly has long runtimes for malformed FlateDecode streams"}