CVE-2026-102994

UNKNOWN 0.0

pypdf: Possible long runtimes/large memory usage when parsing indirect objects

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

pypdf is a free and open-source pure-python PDF library. Prior to 6.18.0, a crafted PDF containing indirect-object identifiers or generation-number tokens that continue for a long time without whitespace can cause pypdf/_reader.py and pypdf/generic/_base.py to scan excessive input through read_until_whitespace, resulting in long runtimes and application unavailability. This issue is fixed in version 6.18.0.

CWE	CWE-400 CWE-407
Vendor	py-pdf
Product	pypdf
Published	Sep 30, 2026
Last Updated	Sep 30, 2026

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Affected Versions

py-pdf / pypdf

< 6.18.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/py-pdf/pypdf/security/advisories/GHSA-5jq2-8x83-x246 github.com: https://github.com/py-pdf/pypdf/pull/4055 github.com: https://github.com/py-pdf/pypdf/commit/82501d2993c6387833c4949d205caeb188f8bb9e github.com: https://github.com/py-pdf/pypdf/releases/tag/6.18.0