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CVE-2026-33123

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-33123

Severity

Unknown
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Summary

pypdf has inefficient decoding of array-based streams

Description

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1.

References

Affected packages

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