Infinite loop Affecting pypdf package, versions [,6.14.1)
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-17900047
- published9 Jul 2026
- disclosed8 Jul 2026
- creditkoltiradw
Introduced: 8 Jul 2026
NewCVE-2026-59936 (opens in a new tab)How to fix?
Upgrade pypdf to version 6.14.1 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 in ContentStream._read_inline_image in pypdf/generic/_data_structures.py. An attacker can hang text extraction or any other content-stream parse by supplying a PDF with an unclosed inline image, causing the parser to keep scanning for the end marker after reaching the end of the stream. This locks up the parsing thread and can prevent the application from finishing processing the affected document.