{"cve":"CVE-2026-49460","nvd":{"published":"2026-06-22T21:16:24.940","modified":"2026-10-25T23:10:00.167","status":"Analyzed","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":5.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","score":3.3},"cwes":["CWE-407"],"references":["https://github.com/py-pdf/pypdf/pull/3806","https://github.com/py-pdf/pypdf/releases/tag/6.12.2","https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hgr-hg42-57jg"],"products":["pypdf_project:pypdf"],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-49460","score":0.00166,"percentile":0.05783,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-5hgr-hg42-57jg","url":"https://osv.dev/vulnerability/GHSA-5hgr-hg42-57jg","summary":"pypdf: Inefficient decoding of FlateDecode PNG predictor streams","modified":"2026-07-13T16:42:25.325556250Z","packages":[{"ecosystem":"PyPI","name":"pypdf","purl":"pkg:pypi/pypdf","ranges":["<6.12.2"],"fixed":["6.12.2"]}]},{"id":"PYSEC-2026-3010","url":"https://osv.dev/vulnerability/PYSEC-2026-3010","summary":"pypdf: Inefficient decoding of FlateDecode PNG predictor streams","modified":"2026-07-13T16:33:08.991048082Z","packages":[{"ecosystem":"PyPI","name":"pypdf","purl":"pkg:pypi/pypdf","ranges":["<6.12.2"],"fixed":["6.12.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}