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Advisory record · GHSA-gmg8-593g-7mv3

Apache POI OOXML Vulnerable to Improper Input Validation in OOXML File Parsing

CVSS 5.3 MediumEPSS 0.014 · 72nd percentile

Published by the GitHub Advisory Database at 9 Apr 2025, 12:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.poi:poi-ooxmlMaven<5.4.05.4.0
Identifiers
GHSA-gmg8-593g-7mv3 · CVE-2025-31672
Weakness (CWE)
CWE-20
Tags
Published
9 Apr 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache POI poi-ooxml versions before 5.4.0 are vulnerable to improper input validation when parsing OOXML files such as xlsx, docx and pptx. An attacker can supply a file containing zip entries with duplicate names, so different products reading the same file may read different data. Upgrade to poi-ooxml 5.4.0, which throws an exception when duplicate zip entry names are found.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.014, the 72nd percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:17 UTC First seen by agentprime
  2. 31 Oct 2026, 14:17 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.