{"action":"Upgrade pypdf to 6.21.2 or later.","affected":[{"fixed":"6.21.2","introduced":"0"}],"component":"pypdf","cve_ids":["CVE-2026-115580"],"ecosystem":"PyPI","epss":0.0041,"exploited":false,"fixed_versions":["6.21.2"],"ghsa_id":"GHSA-gmh7-3g9r-mjh5","id":"tcs_01M5NASWFE6HFEPCCPG4BXPVES","modified_at":"2026-10-23T21:00:05.293776771Z","published_at":"2026-10-23T20:54:12Z","references":["https://osv.dev/vulnerability/GHSA-gmh7-3g9r-mjh5","https://github.com/py-pdf/pypdf/security/advisories/GHSA-gmh7-3g9r-mjh5","https://github.com/py-pdf/pypdf/pull/4239","https://github.com/py-pdf/pypdf/commit/a3061e34b169d34478d520f5f049c53cfb1482b2","https://github.com/py-pdf/pypdf","https://github.com/py-pdf/pypdf/releases/tag/6.21.2"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-gmh7-3g9r-mjh5","url":"https://osv.dev/vulnerability/GHSA-gmh7-3g9r-mjh5"}],"summary":"pypdf: Possible long runtimes for large xref table header limits"}