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CVE-2026-27026

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-27026

Severity

Unknown
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Summary

pypdf possibly has long runtimes for malformed FlateDecode 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. This requires a malformed /FlateDecode stream, where the byte-by-byte decompression is used. This vulnerability is fixed in 6.7.1.

References

Affected packages

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