# XML external entity expansion in org.apache.solr:solr-core

Advisory record · `GHSA-7px3-6f6g-hxcj`

- **Identifiers:** `GHSA-7px3-6f6g-hxcj` · `CVE-2018-8026`
- **State:** Confirmed
- **Severity:** CVSS 5.5 Medium
- **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 Oct 2018
- **Updated:** 4 Mar 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 17 Oct 2018, 19:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.apache.solr:solr-core` (Maven): affected `>=7.0.0, <7.4.0 || >=6.0.0, <6.6.5`; fixed in `7.4.0`, `6.6.5`

## 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

- 5.5 Medium, CVSS 3.0: `CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.087, the 95th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 17 Oct 2018. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-7px3-6f6g-hxcj](https://github.com/advisories/GHSA-7px3-6f6g-hxcj)
- [OSV: GHSA-7px3-6f6g-hxcj](https://osv.dev/vulnerability/GHSA-7px3-6f6g-hxcj)
- <https://nvd.nist.gov/vuln/detail/CVE-2018-8026>
- <https://github.com/apache/lucene-solr/commit/1880d4824e6c5f98170b9a00aad1d437ee2aa12>
- <https://github.com/apache/lucene-solr/commit/3aa6086ed99fa7158d423dc7c33dae6da466b09>
- <https://github.com/apache/lucene-solr/commit/d1baf6ba593561f39e2da0a71a8440797005b55>
- <https://github.com/apache/lucene-solr/commit/e5407c5a9710247e5f728aae36224a245a51f0b>
- <https://github.com/advisories/GHSA-7px3-6f6g-hxcj>
- <https://issues.apache.org/jira/browse/SOLR-12450>
- <https://mail-archives.apache.org/mod_mbox/lucene-solr-user/201807.mbox/%3C0cdc01d413b7%24f97ba580%24ec72f080%24%40apache.org%3E>
- <https://security.netapp.com/advisory/ntap-20190307-0002>

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-7px3-6f6g-hxcj>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-7px3-6f6g-hxcj/>. Everything for agents: <https://agentprime.io/llms.txt>.