CVE-2026-41312

N/A

Description

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to the RAM being exhausted. This requires accessing a stream compressed using `/FlateDecode` with a `/Predictor` unequal 1 and large predictor parameters. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

CVE Details

CVSS v3.1 ScoreN/A

Published4/22/2026

Last Modified4/22/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-789

References

https://github.com/py-pdf/pypdf/commit/ac734dab4eef92bcce50d503949b4d9887d89f11(security-advisories@github.com)

https://github.com/py-pdf/pypdf/pull/3734(security-advisories@github.com)

https://github.com/py-pdf/pypdf/releases/tag/6.10.2(security-advisories@github.com)

https://github.com/py-pdf/pypdf/security/advisories/GHSA-7gw9-cf7v-778f(security-advisories@github.com)

IOC Correlations

No correlations recorded

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