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Vulnerability DatabaseCVE-2025-66019

CVE-2025-66019: 
Python vulnerability analysis and mitigation

pypdf is a free and open-source pure-python PDF library. Prior to version 6.4.0, an attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter. This issue has been patched in version 6.4.0.

Source: NVD

Related Python vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-62703HIGH8.8
  • PythonPython
  • fugue
NoNoNov 25, 2025
CVE-2025-13609HIGH8.2
  • PythonPython
  • keylime
NoYesNov 24, 2025
CVE-2025-66019MEDIUM6.6
  • PythonPython
  • pypdf
NoYesNov 26, 2025
GHSA-m449-cwjh-6pw7MEDIUM6.6
  • PythonPython
  • pypdf
NoYesNov 24, 2025
GHSA-j4gv-6x9v-v23gLOW1.3
  • PythonPython
  • omero-web
NoYesNov 24, 2025

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