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

Status: published. Published: 2026-11-02. Updated: 2026-11-02.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/owen2345/camaleon-cms/pull/1147
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/owen2345/camaleon-cms/commit/7fe4fa0bf99256dfe32b5f674baf4f771606549e

## Affected products and versions

- owen2345 / Camaleon CMS (camaleon_cms): ≥ 0; < 2.9.2 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 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; source: CNA: VulnCheck

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N; source: CNA: VulnCheck

- CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-862

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/owen2345/camaleon-cms/pull/1147 (CNA: VulnCheck; patch, issue-tracking)

- https://github.com/owen2345/camaleon-cms/commit/7fe4fa0bf99256dfe32b5f674baf4f771606549e (CNA: VulnCheck; patch)

- https://github.com/owen2345/camaleon-cms/blob/2.9.1/app/controllers/camaleon_cms/admin/media_controller.rb (CNA: VulnCheck; technical-description)

- https://github.com/owen2345/camaleon-cms/releases/tag/2.9.2 (CNA: VulnCheck; release-notes)

- https://www.vulncheck.com/advisories/camaleon-cms-before-2.9.2-missing-authorization-via-admin-mediacontroller (CNA: VulnCheck; third-party-advisory)

- https://github.com/owen2345/camaleon-cms/blob/2.9.1/app/controllers/camaleon_cms/admin/media_controller.rb (disclosure@vulncheck.com)

- https://github.com/owen2345/camaleon-cms/commit/7fe4fa0bf99256dfe32b5f674baf4f771606549e (disclosure@vulncheck.com)

- https://github.com/owen2345/camaleon-cms/pull/1147 (disclosure@vulncheck.com)

- https://github.com/owen2345/camaleon-cms/releases/tag/2.9.2 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/camaleon-cms-before-2.9.2-missing-authorization-via-admin-mediacontroller (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-120429; retrieved 2026-11-02; source updated 2026-11-02

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-120429; retrieved 2026-11-02; source updated 2026-11-02

Revision: e3c843f9d522785dffc266427db27eea397ec3a24d0f5125e1f2cdebf9b8b036

Canonical: https://y2.dev/cve/CVE-2026-120429

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