{"action":"Upgrade pypdf to 3.9.0 or later.","affected":[{"fixed":"3.9.0","introduced":"3.1.0"}],"component":"pypdf","cve_ids":["CVE-2023-36464"],"ecosystem":"PyPI","epss":0.00352,"exploited":false,"fixed_versions":["3.9.0"],"ghsa_id":"GHSA-4vvm-4w3v-6mr8","id":"tcs_01M5KH2WFA24F3D7XRGQ9E3MDP","modified_at":"2026-07-13T16:42:55.319975462Z","published_at":"2026-07-13T14:20:01.430330Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3008","https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8","https://nvd.nist.gov/vuln/detail/CVE-2023-36464","https://github.com/py-pdf/pypdf/pull/1828","https://github.com/py-pdf/pypdf/pull/969","https://github.com/py-pdf/pypdf/commit/b0e5c689df689ab173df84dacd77b6fc3c161932","https://github.com/py-pdf/pypdf","https://github.com/py-pdf/pypdf/releases/tag/3.9.0","https://pypi.org/project/pypdf","https://github.com/advisories/GHSA-4vvm-4w3v-6mr8"],"severity":{"label":"medium","score":6.2},"sources":[{"source":"osv","source_id":"PYSEC-2026-3008","url":"https://osv.dev/vulnerability/PYSEC-2026-3008"}],"summary":"pypdf and PyPDF2 possible Infinite Loop when a comment isn't followed by a character"}