{"id":"CVE-2026-103000","revision":"ece742784c3f4b6cb032b47b95f234a9","records":[{"revision":"ece742784c3f4b6cb032b47b95f234a9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-103000","aliases":[],"title":"pypdf: Possible large memory usage when retrieving alphabetical page labels","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF can provide unusually large alphabetical page-label values that cause pypdf/_page_labels.py to generate strings beyond a reasonable page-label length when an application retrieves document page labels, consuming excessive memory and potentially making the application unavailable. This issue is fixed in version 6.19.0.","state":0,"publishedAt":"2026-09-30T20:13:00.379+00:00","modifiedAt":"2026-09-30T20:49:21.058+00:00","affected":[{"ecosystem":"Vendor product","name":"pypdf","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"py-pdf\",\n                    \"product\": \"pypdf\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 6.19.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"}],"references":["https://github.com/py-pdf/pypdf/security/advisories/GHSA-w23x-9jrw-r45c","https://github.com/py-pdf/pypdf/pull/4096","https://github.com/py-pdf/pypdf/commit/0d8b5a8832cde1ba308b5c27567b879b7b7eed4a","https://github.com/py-pdf/pypdf/releases/tag/6.19.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-103000","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-103000","identifiers":["CVE-2026-103000"]},"retained":false,"historicalAffected":[]}],"coverage":[]}