{"action":"Upgrade pypdf to 6.4.0 or later.","affected":[{"fixed":"6.4.0","introduced":"0"}],"component":"pypdf","cve_ids":["CVE-2025-66019"],"ecosystem":"PyPI","epss":0.00387,"exploited":false,"fixed_versions":["6.4.0"],"ghsa_id":"GHSA-m449-cwjh-6pw7","id":"tcs_01M5KGVYPQWQ6XKADABHGVC9XA","modified_at":"2026-07-07T17:46:59.109908172Z","published_at":"2026-07-07T16:03:10.809096Z","references":["https://osv.dev/vulnerability/PYSEC-2026-1832","https://github.com/py-pdf/pypdf/security/advisories/GHSA-jfx9-29x2-rv3j","https://github.com/py-pdf/pypdf/security/advisories/GHSA-m449-cwjh-6pw7","https://nvd.nist.gov/vuln/detail/CVE-2025-66019","https://github.com/py-pdf/pypdf/commit/96186725e5e6f237129a58a97cd19204a9ce40b2","https://aydinnyunus.github.io/2025/12/20/cve-2025-66019-pypdf-lzw-dos","https://github.com/py-pdf/pypdf","https://github.com/py-pdf/pypdf/releases/tag/6.4.0","https://pypi.org/project/pypdf","https://github.com/advisories/GHSA-m449-cwjh-6pw7"],"severity":{"label":"medium","score":6.6},"sources":[{"source":"osv","source_id":"PYSEC-2026-1832","url":"https://osv.dev/vulnerability/PYSEC-2026-1832"},{"source":"nvd","source_id":"CVE-2025-66019","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66019"}],"summary":"pypdf's LZWDecode streams be manipulated to exhaust RAM"}