CVE-2026-113789

UNKNOWN 0.0

pypdf: Possible long runtimes/large memory usage when retrieving form fields

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0.

CWE	CWE-400 CWE-407
Vendor	py-pdf
Product	pypdf
Published	Oct 21, 2026

Stay Ahead of the Next One

Get instant alerts for py-pdf pypdf

Be the first to know when new unknown vulnerabilities affecting py-pdf pypdf are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

py-pdf / pypdf

< 6.21.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/py-pdf/pypdf/security/advisories/GHSA-6vvc-x485-93v7 github.com: https://github.com/py-pdf/pypdf/pull/4219 github.com: https://github.com/py-pdf/pypdf/commit/5ef728f0e16d225c853e89f861ba0a67402fe3f2 github.com: https://github.com/py-pdf/pypdf/releases/tag/6.21.0