CVE-2025-31672 – Apache POI OOXML Duplicate Zip Entry Vulnerability

The following table lists the changes that have been made to the
CVE-2025-31672 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • CVE Modified
    by af854a3a-2127-422b-91ae-364da2661108

    Apr. 09, 2025

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2025/04/08/2
  • New CVE Received
    by [email protected]

    Apr. 09, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added CWE CWE-20
    Added Reference https://bz.apache.org/bugzilla/show_bug.cgi?id=69620
    Added Reference https://lists.apache.org/thread/k14w8vcjqy4h34hh5kzldko78kpylkq5
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