Infinite loop Affecting pypdf package, versions [,6.20.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-PYPDF-21427269
- published22 Oct 2026
- disclosed21 Oct 2026
- creditUnknown
Introduced: 21 Oct 2026
NewCVE-2026-113794 (opens in a new tab)How to fix?
Upgrade pypdf to version 6.20.0 or higher.
Overview
pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files
Affected versions of this package are vulnerable to Infinite loop via _read_standard_xref_table in pypdf/_reader.py, where processing a malformed PDF file with a truncated cross-reference (xref) table causes an infinite loop or unhandled EOF condition. An attacker can supply a PDF whose xref table ends prematurely, triggering the crash and crashing the process.