{"id":"CVE-2026-115580","revision":null,"records":[{"revision":"89420591943f46c780b071b49f8eba26","observedAt":"2026-10-23T20:48:20.645+00:00","statement":{"source":"cve-program","id":"CVE-2026-115580","aliases":[],"title":"pypdf: Possible long runtimes for large xref table header limits","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.","state":0,"publishedAt":"2026-10-23T19:29:49.845+00:00","modifiedAt":"2026-10-23T19:29:49.845+00:00","affected":[{"ecosystem":"Vendor product","name":"pypdf","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"py-pdf\",\n                    \"product\": \"pypdf\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 6.21.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"}],"references":["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/releases/tag/6.21.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115580","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-115580","identifiers":["CVE-2026-115580"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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