{"id":"CVE-2026-57204","aliases":["GHSA-jm82-fx9c-mx94"],"url":"https://o3.security/vulnerability/CVE-2026-57204","summary":"pypdf: Missing stream length values ignore defined limits","details":"pypdf is a free and open-source pure-python PDF library. Prior to 6.13.3, a maliciously crafted PDF can cause DoS. An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value. This issue has been fixed in version 6.13.3.","published":"2026-06-30T21:59:46.274Z","modified":"2026-08-12T03:51:19.402826821Z","cvss":null,"epss":{"score":0.00367,"percentile":0.29617,"asOf":"2026-09-01"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pypdf","fixedVersion":"6.13.3"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/py-pdf/pypdf/releases/tag/6.13.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57204.json"},{"type":"ADVISORY","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-jm82-fx9c-mx94"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57204"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:19.402826821Z"}}