Vulnerability 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.
Related Weaknesses (CWE)
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
FAQ
What is CVE-2026-71870?
CVE-2026-71870 is a documented vulnerability. 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...
How severe is CVE-2026-71870?
CVSS scoring is not yet available for CVE-2026-71870. Check NVD for updates.
Is there a patch for CVE-2026-71870?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.