CVE-2026-120429
Camaleon CMS before 2.9.2 Missing Authorization via Admin::MediaController
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Camaleon CMS owen2345 camaleon_cms
gem |
≥ 0; < 2.9.2 (affected, semver)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 7.1 high |
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 | CNA: VulnCheck |
| 3.1 / 7.1 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/owen2345/camaleon-cms/pull/1147CNA: VulnCheck · patch, issue-tracking
- https://github.com/owen2345/camaleon-cms/commit/7fe4fa0bf99256dfe32b5f674baf4f771606549eCNA: VulnCheck · patch
- https://github.com/owen2345/camaleon-cms/blob/2.9.1/app/controllers/camaleon_cms/admin/media_controller.rbCNA: VulnCheck · technical-description
- https://github.com/owen2345/camaleon-cms/releases/tag/2.9.2CNA: VulnCheck · release-notes
- https://www.vulncheck.com/advisories/camaleon-cms-before-2.9.2-missing-authorization-via-admin-mediacontrollerCNA: VulnCheck · third-party-advisory
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