What’s Vulnerable › Vulnerabilities

CVE-2026-1776: Camaleon CMS AWS Uploader Authenticated Path Traversal Arbitrary File Read

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-10 · updated 2026-10-08
• Weakness: CWE-22

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 products

• owen2345 camaleon-cms: from 2.4.5 through 2.9.0

References

• https://camaleon.website/
• https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
• https://github.com/owen2345/camaleon-cms/pull/1127
• https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read

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