Apache Poi vulnerabilities

CVE-2025-31672 [MEDIUM] CWE-20 CVE-2025-31672: Improper Input Validation vulnerability in Apache POI. The issue affects the parsing of OOXML format 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 diff

CVE-2022-26336 [MEDIUM] CWE-20 CVE-2022-26336: A shortcoming in the HMEF package of poi-scratchpad (Apache POI) allows an attacker to cause an Out A shortcoming in the HMEF package of poi-scratchpad (Apache POI) allows an attacker to cause an Out of Memory exception. This package is used to read TNEF files (Microsoft Outlook and Microsoft Exchange Server). If an application uses poi-scratchpad to parse TNEF files and the application allows untrusted users to supply them, then a carefully crafted

CVE-2019-12415 [MEDIUM] CWE-611 CVE-2019-12415: In Apache POI up to 4.1.0, when using the tool XSSFExportToXml to convert user-provided Microsoft Ex In Apache POI up to 4.1.0, when using the tool XSSFExportToXml to convert user-provided Microsoft Excel documents, a specially crafted document can allow an attacker to read files from the local filesystem or from internal network resources via XML External Entity (XXE) Processing.

CVE-2017-12626 [HIGH] CWE-835 CVE-2017-12626: Apache POI in versions prior to release 3.17 are vulnerable to Denial of Service Attacks: 1) Infinit Apache POI in versions prior to release 3.17 are vulnerable to Denial of Service Attacks: 1) Infinite Loops while parsing crafted WMF, EMF, MSG and macros (POI bugs 61338 and 61294), and 2) Out of Memory Exceptions while parsing crafted DOC, PPT and XLS (POI bugs 52372 and 61295).

CVE-2017-5644 [MEDIUM] CWE-776 CVE-2017-5644: Apache POI in versions prior to release 3.15 allows remote attackers to cause a denial of service (C Apache POI in versions prior to release 3.15 allows remote attackers to cause a denial of service (CPU consumption) via a specially crafted OOXML file, aka an XML Entity Expansion (XEE) attack.

CVE-2016-5000 [MEDIUM] CWE-611 CVE-2016-5000: The XLSX2CSV example in Apache POI before 3.14 allows remote attackers to read arbitrary files via a The XLSX2CSV example in Apache POI before 3.14 allows remote attackers to read arbitrary files via a crafted OpenXML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

CVE-2014-9527 [MEDIUM] CWE-399 CVE-2014-9527: HSLFSlideShow in Apache POI before 3.11 allows remote attackers to cause a denial of service (infini HSLFSlideShow in Apache POI before 3.11 allows remote attackers to cause a denial of service (infinite loop and deadlock) via a crafted PPT file.

CVE-2014-3529 [MEDIUM] CVE-2014-3529: The OPC SAX setup in Apache POI before 3.10.1 allows remote attackers to read arbitrary files via an The OPC SAX setup in Apache POI before 3.10.1 allows remote attackers to read arbitrary files via an OpenXML file containing an XML external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

CVE-2014-3574 [MEDIUM] CVE-2014-3574: Apache POI before 3.10.1 and 3.11.x before 3.11-beta2 allows remote attackers to cause a denial of s Apache POI before 3.10.1 and 3.11.x before 3.11-beta2 allows remote attackers to cause a denial of service (CPU consumption and crash) via a crafted OOXML file, aka an XML Entity Expansion (XEE) attack.

CVE-2012-0213 [MEDIUM] CWE-399 CVE-2012-0213: The UnhandledDataStructure function in hwpf/model/UnhandledDataStructure.java in Apache POI 3.8 and The UnhandledDataStructure function in hwpf/model/UnhandledDataStructure.java in Apache POI 3.8 and earlier allows remote attackers to cause a denial of service (OutOfMemoryError exception and possibly JVM destabilization) via a crafted length value in a Channel Definition Format (CDF) or Compound File Binary Format (CFBF) document.