{"id":"CVE-2026-41168","aliases":["GHSA-jj6c-8h6c-hppx","PYSEC-2026-3021"],"url":"https://o3.security/vulnerability/CVE-2026-41168","summary":"pypdf has possible long runtimes for wrong size values in cross-reference and object streams","details":"pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large `/Size` values or object streams with wrong large `/N` values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.","published":"2026-04-22T20:49:10.401Z","modified":"2026-07-15T01:48:57.198547192Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pypdf","fixedVersion":"6.10.1"}],"fix":{"url":"https://github.com/py-pdf/pypdf/commit/62338e9d36419cf193ccec7331784f45df1d70b3","label":"py-pdf/pypdf@62338e9"},"references":[{"type":"WEB","url":"https://github.com/py-pdf/pypdf/releases/tag/6.10.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41168.json"},{"type":"ADVISORY","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-jj6c-8h6c-hppx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41168"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/commit/62338e9d36419cf193ccec7331784f45df1d70b3"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/pull/3733"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:57.198547192Z"}}