{"id":"CVE-2026-49460","aliases":["GHSA-5hgr-hg42-57jg","PYSEC-2026-3010"],"url":"https://o3.security/vulnerability/CVE-2026-49460","summary":"pypdf: Inefficient decoding of FlateDecode PNG predictor streams","details":"pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.","published":"2026-06-22T20:28:16.413Z","modified":"2026-08-12T03:51:30.088649866Z","cvss":null,"epss":{"score":0.00166,"percentile":0.06098,"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/3806","label":"py-pdf/pypdf#3806"},"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-2026-49460.json"},{"type":"ADVISORY","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hgr-hg42-57jg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49460"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/pull/3806"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:30.088649866Z"}}