{"id":"CVE-2026-102993","aliases":["GHSA-qv6h-rv94-w285","PYSEC-2026-4158"],"url":"https://o3.security/vulnerability/CVE-2026-102993","summary":"pypdf: Possible large memory usage when retrieving Roman page labels","details":"pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an application retrieves document page labels, consuming large amounts of memory and potentially making the application unavailable. This issue is fixed in version 6.17.0.","published":"2026-09-30T19:55:52.294Z","modified":"2026-10-02T03:47:25.964778515Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"pypdf","fixedVersion":"6.17.0"}],"fix":{"url":"https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163","label":"py-pdf/pypdf@89db7c4"},"references":[{"type":"WEB","url":"https://github.com/py-pdf/pypdf/releases/tag/6.17.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102993.json"},{"type":"ADVISORY","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102993"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/pull/4047"},{"type":"PACKAGE","url":"https://github.com/py-pdf/pypdf"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-02T03:47:25.964778515Z"}}