CVE-2026-1776

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.

PUBLISHED Reserved 2026-02-02 | Published 2026-03-09 | Updated 2026-03-11 | Assigner VulnCheck

Problem types

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Credits

Michael Loomis (investigato) finder

VulnCheck coordinator

References

github.com/owen2345/camaleon-cms/pull/1127 issue-tracking

github.com/...ommit/f54a77e2a7be601215ea1b396038c589a0cab9af patch

camaleon.website/ product

www.vulncheck.com/...ated-path-traversal-arbitrary-file-read third-party-advisory

cve.org (CVE-2026-1776)

nvd.nist.gov (CVE-2026-1776)

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