Vulnerability · Published Mar 9, 2026 · Assigned by VulnCheck
CVE-2026-1776Camaleon CMS AWS Uploader Authenticated Path Traversal Arbitrary File Read
Medium 6.0
In plain English
A medium-severity path traversal in Camaleon CMS from owen2345. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).
Official description
Camaleon CMS versions 2.4.5.0 through 2.9.0, 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| RubyGems | camaleon_cms | no fix listed | GHSA-jw5g-f64p-6x78 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| owen2345 | Camaleon CMS | 2.4.5.0 – through 2.9.0 |
Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/owen2345/camaleon-cms/pull/1127 issue-tracking
- https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af patch
- https://camaleon.website/ product
- https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read third-party-advisory