{"id":"CVE-2026-49461","aliases":["GHSA-j543-4vmf-qm7v","PYSEC-2026-3020"],"url":"https://o3.security/vulnerability/CVE-2026-49461","summary":"pypdf: Possible large memory usage for form XObjects during text extraction","details":"### Impact\nAn attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references.\n\n### Patches\nThis has been fixed in [pypdf==6.12.2](https://github.com/py-pdf/pypdf/releases/tag/6.12.2).\n\n### Workarounds\nIf you cannot upgrade yet, consider applying the changes from PR [#3805](https://github.com/py-pdf/pypdf/pull/3805).","published":"2026-06-22T20:27:16.174Z","modified":"2026-10-21T02:58:23.141960624Z","cvss":null,"epss":{"score":0.00174,"percentile":0.06972,"asOf":"2026-09-01"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pypdf","fixedVersion":"6.12.2"}],"fix":{"url":"https://github.com/py-pdf/pypdf/pull/3805","label":"py-pdf/pypdf#3805"},"references":[{"type":"WEB","url":"https://github.com/py-pdf/pypdf/releases/tag/6.12.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49461.json"},{"type":"ADVISORY","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-j543-4vmf-qm7v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49461"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/pull/3805"},{"type":"PACKAGE","url":"https://github.com/py-pdf/pypdf"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:58:23.141960624Z"}}