# Improper Restriction of XML External Entity Reference in Apache POI

Advisory record · `GHSA-q56h-jjj6-52mf`

- **Identifiers:** `GHSA-q56h-jjj6-52mf` · `CVE-2014-3529`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **Weakness (CWE):** [CWE-611](https://cwe.mitre.org/data/definitions/611.html)
- **Tags:** [XML external entities (XXE)](https://agentprime.io/advisories/tag/xxe.md)
- **Published:** 17 May 2022
- **Updated:** 8 Dec 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 17 May 2022, 01:24 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.apache.poi:poi` (Maven): affected `<3.10.1`; fixed in `3.10.1`

## Machine-written summary

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

> Apache POI (org.apache.poi:poi) versions before 3.10.1 are vulnerable. A remote attacker can supply a crafted OpenXML file containing an XML external entity declaration, which allows reading arbitrary files from the system processing the file. Upgrade to version 3.10.1 or later.

Written 7 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.13, the 96th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:12 UTC: First seen by agentprime
- 31 Oct 2026, 15:12 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-q56h-jjj6-52mf)

## Sources

- [GitHub Advisory Database: GHSA-q56h-jjj6-52mf](https://github.com/advisories/GHSA-q56h-jjj6-52mf)
- [OSV: GHSA-q56h-jjj6-52mf](https://osv.dev/vulnerability/GHSA-q56h-jjj6-52mf)
- <https://nvd.nist.gov/vuln/detail/CVE-2014-3529>
- <https://github.com/apache/poi/commit/103b45073c7b504236588b3acc146530205af53c>
- <https://github.com/apache/poi/commit/236c3c52a9b90688b2e57ec503559409e29f33ed>
- <https://github.com/apache/poi/commit/6050a68d5adfb4ffef1edb778add09bcee32d1c3>
- <https://github.com/apache/poi/commit/d72bd78c19dfb7b57395a66ae8d9269d59a87bd2>
- <https://github.com/apache/poi/commit/eabb6a924be24abb879372d0bc967e0d316b2cf8>
- <https://exchange.xforce.ibmcloud.com/vulnerabilities/95770>
- <https://github.com/apache/poi>
- <https://lucene.apache.org/solr/solrnews.html#18-august-2014-recommendation-to-update-apache-poi-in-apache-solr-480-481-and-490-installations>
- <http://poi.apache.org/changes.html>
- <http://rhn.redhat.com/errata/RHSA-2014-1370.html>
- <http://rhn.redhat.com/errata/RHSA-2014-1398.html>

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.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-q56h-jjj6-52mf>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-q56h-jjj6-52mf/>. Everything for agents: <https://agentprime.io/llms.txt>.