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6.0
Camaleon CMS allows unauthorized access to server files via S3 uploader
CVE-2026-1776
GHSA-jw5g-f64p-6x78
Summary
Camaleon CMS versions 2.4.5.0 to 2.9.1 have a security weakness that allows users to access sensitive files on the server. This is a concern because it could allow an attacker to access confidential information. To protect your site, update to a newer version of Camaleon CMS.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| – | camaleon_cms | > 2.4.5.0 , <= 2.9.1 | – |
Original title
Camaleon CMS vulnerable to Path Traversal through AWS S3 uploader implementation
Original description
Camaleon CMS versions 2.4.5.0 through 2.9.1, prior to commit f54a77e, contain a path traversal vulnerability in the AWS S3 uploader implementation that allows authenticated users to read arbitrary files from the web server’s filesystem. The issue occurs in the download_private_file functionality when the application is configured to use the CamaleonCmsAwsUploader backend. Unlike the local uploader implementation, the AWS uploader does not validate file paths with valid_folder_path?, allowing directory traversal sequences to be supplied via the file parameter. As a result, any authenticated user, including low-privileged registered users, can access sensitive files such as /etc/passwd. This issue represents a bypass of the incomplete fix for CVE-2024-46987 and affects deployments using the AWS S3 storage backend.
nvd CVSS4.0
6.0
Vulnerability type
CWE-22
Path Traversal
- https://camaleon.website/
- https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589...
- https://github.com/owen2345/camaleon-cms/pull/1127
- https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-pat...
- https://nvd.nist.gov/vuln/detail/CVE-2026-1776
- https://camaleon.website
- https://github.com/advisories/GHSA-jw5g-f64p-6x78
Published: 10 Mar 2026 · Updated: 14 Mar 2026 · First seen: 10 Mar 2026