# SimpleXML has XML External Entity (XXE) vulnerability

Advisory record · `GHSA-f5qf-vh69-9q4r`

- **Identifiers:** `GHSA-f5qf-vh69-9q4r` · `CVE-2017-1000190`
- **State:** Confirmed
- **Severity:** CVSS 9.1 Critical
- **Critical:** Yes: CVSS 9+
- **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:** 14 May 2022
- **Updated:** 15 Sept 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 14 May 2022, 00:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.1: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `org.simpleframework:simple-xml` (Maven): affected `<2.7.1`; fixed in `2.7.1`

## Machine-written summary

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

> The org.simpleframework:simple-xml package is vulnerable in versions before 2.7.1. The source gives few details, but describes an XML external entity (XXE) flaw that could enable server-side request forgery, information disclosure, or denial of service, likely by processing crafted XML input. Upgrade to version 2.7.1, which is listed as the fixed version.

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

- 9.1 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.047, the 91st percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:10 UTC: First seen by agentprime
- 31 Oct 2026, 15:10 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-f5qf-vh69-9q4r)

## Sources

- [GitHub Advisory Database: GHSA-f5qf-vh69-9q4r](https://github.com/advisories/GHSA-f5qf-vh69-9q4r)
- [OSV: GHSA-f5qf-vh69-9q4r](https://osv.dev/vulnerability/GHSA-f5qf-vh69-9q4r)
- <https://nvd.nist.gov/vuln/detail/CVE-2017-1000190>
- <https://github.com/ngallagher/simplexml/issues/18>
- <https://github.com/ngallagher/simplexml>
- <https://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3E>
- <https://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451@%3Csolr-user.lucene.apache.org%3E>
- <https://lists.apache.org/thread.html/8c4ef27e2c0218f29e785990dc919266855aea137c958f10d242cb36%40%3Cdev.lucene.apache.org%3E>
- <https://lists.apache.org/thread.html/8c4ef27e2c0218f29e785990dc919266855aea137c958f10d242cb36@%3Cdev.lucene.apache.org%3E>
- <https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5%40%3Csolr-user.lucene.apache.org%3E>
- <https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5@%3Csolr-user.lucene.apache.org%3E>

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-f5qf-vh69-9q4r>, 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-f5qf-vh69-9q4r/>. Everything for agents: <https://agentprime.io/llms.txt>.