{"action":"Upgrade pypdf to 6.16.0 or later.","affected":[{"fixed":"6.16.0","introduced":"0"}],"component":"pypdf","cve_ids":["CVE-2026-84309"],"ecosystem":"PyPI","epss":0.00187,"exploited":false,"fixed_versions":["6.16.0"],"ghsa_id":"GHSA-jp53-mhqp-8xcg","id":"tcs_01M5KFPACQYXC9MMEP03PKMNNM","modified_at":"2026-09-10T12:25:36.667036932Z","published_at":"2026-09-01T21:20:20Z","references":["https://osv.dev/vulnerability/GHSA-jp53-mhqp-8xcg","https://github.com/py-pdf/pypdf/security/advisories/GHSA-jp53-mhqp-8xcg","https://github.com/py-pdf/pypdf/pull/3964","https://github.com/py-pdf/pypdf/commit/c9ba557d565d57c53a0b3a0be06c0a4c29b0559b","https://github.com/py-pdf/pypdf","https://github.com/py-pdf/pypdf/releases/tag/6.16.0"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-jp53-mhqp-8xcg","url":"https://osv.dev/vulnerability/GHSA-jp53-mhqp-8xcg"}],"summary":"pypdf: Possible infinite loop for TreeObject.insert_child"}