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Security Advisories

CVE-2026-27025

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-27025

Severity

Unknown
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Summary

pypdf has possible long runtimes/large memory usage for large /ToUnicode streams

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. This vulnerability is fixed in 6.7.1.

References

Affected packages

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