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CVE-2025-31672— Apache POI: parsing OOXML based files (xlsx, docx, etc.), poi-ooxml could read unexpected data if underlying zip has duplicate zip entry names

EPSS 1.01% · P77
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I. Basic Information for CVE-2025-31672

Vulnerability Information
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Vulnerability Title
Apache POI: parsing OOXML based files (xlsx, docx, etc.), poi-ooxml could read unexpected data if underlying zip has duplicate zip entry names
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache POI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache POI是美国阿帕奇（Apache）基金会的一个开源函数库，它提供API给Java程序可对Microsoft Office格式档案进行读和写。 Apache POI 5.4.0之前版本存在安全漏洞，该漏洞源于输入验证不当，可能导致读取不同数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Apache Software FoundationApache POI 0 ~ 5.4.0 -

II. Public POCs for CVE-2025-31672

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III. Intelligence Information for CVE-2025-31672

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IV. Related Vulnerabilities

Same product: Apache POI
Same vendor: Apache Software Foundation
Same weakness: CWE-20

V. Comments for CVE-2025-31672

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