Bug 2358619 (CVE-2025-31672) - CVE-2025-31672 org.apache.poi/poi-ooxml: Apache POI: parsing OOXML based files (xlsx, docx, etc.), poi-ooxml could read unexpected data if underlying zip has duplicate zip entry names
Summary: CVE-2025-31672 org.apache.poi/poi-ooxml: Apache POI: parsing OOXML based file...
Keywords:
Status: NEW
Alias: CVE-2025-31672
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-04-09 13:01 UTC by OSIDB Bzimport
Modified: 2025-04-09 18:46 UTC (History)
48 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2025-04-09 13:01:10 UTC 
Improper Input Validation vulnerability in Apache POI. The issue affects the parsing of OOXML format files like xlsx, docx and pptx. These file formats are basically zip files and it is possible for malicious users to add zip entries with duplicate names (including the path) in the zip. In this case, products reading the affected file could read different data because 1 of the zip entries with the duplicate name is selected over another but different products may choose a different zip entry.
This issue affects Apache POI poi-ooxml before 5.4.0. poi-ooxml 5.4.0 has a check that throws an exception if zip entries with duplicate file names are found in the input file.
Users are recommended to upgrade to version poi-ooxml 5.4.0, which fixes the issue. Please read  https://poi.apache.org/security.html  for recommendations about how to use the POI libraries securely.
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