{"cve":"CVE-2026-71870","nvd":{"published":"2026-08-07T20:16:52.873","modified":"2026-10-24T15:10:00.190","status":"Analyzed","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/_cmap.py function parse_bfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed in 6.15.0.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":4.8},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","score":3.3},"cwes":["CWE-400"],"references":["https://github.com/py-pdf/pypdf/commit/afba8080e19d29a3c256a742b340995e695b35aa","https://github.com/py-pdf/pypdf/pull/3944","https://github.com/py-pdf/pypdf/releases/tag/6.15.0","https://github.com/py-pdf/pypdf/security/advisories/GHSA-fp3f-mc75-235c"],"products":["pypdf_project:pypdf"],"source":"nvd","synced_at":"2026-10-24T16:53:34.184483516+00:00"},"epss":{"cve":"CVE-2026-71870","score":0.00125,"percentile":0.02213,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-fp3f-mc75-235c","url":"https://osv.dev/vulnerability/GHSA-fp3f-mc75-235c","summary":"pypdf: Possible large memory usage for large /ToUnicode streams","modified":"2026-09-10T03:51:13.982103349Z","packages":[{"ecosystem":"PyPI","name":"pypdf","purl":"pkg:pypi/pypdf","ranges":["<6.15.0"],"fixed":["6.15.0"]}]},{"id":"PYSEC-2026-3655","url":"https://osv.dev/vulnerability/PYSEC-2026-3655","summary":"pypdf: Possible large memory usage for large /ToUnicode streams","modified":"2026-08-10T11:30:12.871465923Z","packages":[{"ecosystem":"PyPI","name":"pypdf","purl":"pkg:pypi/pypdf","ranges":["<6.15.0"],"fixed":["6.15.0"]}]}],"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."]}