{"id":"CVE-2026-119207","aliases":["GHSA-4vqv-7265-gm2w"],"url":"https://o3.security/vulnerability/CVE-2026-119207","summary":"pypdf: Possible large memory usage for exceptions in strict mode","details":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messages. This issue is fixed in version 6.21.3.","published":"2026-10-29T20:38:54.611Z","modified":"2026-10-31T02:47:37.486664090Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"pypdf","fixedVersion":"6.21.3"}],"fix":{"url":"https://github.com/py-pdf/pypdf/commit/64270258c0eced720f7960aecf8cef31afd39f8d","label":"py-pdf/pypdf@6427025"},"references":[{"type":"WEB","url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119207.json"},{"type":"ADVISORY","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vqv-7265-gm2w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119207"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/commit/64270258c0eced720f7960aecf8cef31afd39f8d"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/pull/4265"},{"type":"PACKAGE","url":"https://github.com/py-pdf/pypdf"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-31T02:47:37.486664090Z"}}