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Security Advisories

CVE-2026-71870

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-71870

Severity

Unknown
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Summary

pypdf: Possible large memory usage for large /ToUnicode streams

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.

References

Affected packages

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