Improper Handling of Highly Compressed Data (Data Amplification) Affecting pypdf package, versions [,6.1.3)
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-13658706
- published23 Oct 2025
- disclosed22 Oct 2025
- creditChenhao tylzh97, Stefan stefan6419846
Introduced: 22 Oct 2025
NewCVE-2025-62708 (opens in a new tab)How to fix?
Upgrade pypdf to version 6.1.3 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 Improper Handling of Highly Compressed Data (Data Amplification) in the LZWDecode process. An attacker can cause excessive memory consumption by submitting a specially crafted PDF file containing manipulated LZWDecode streams. This is only exploitable if the content stream of a page is parsed using the LZWDecode filter.