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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
camaleon_cmsRubyGems | >= 2.4.5.0, <= 2.9.1 | — |
Affected products
2Patches
Vulnerability mechanics
References
8- github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9afnvdPatchWEB
- github.com/owen2345/camaleon-cms/pull/1127nvdIssue TrackingPatchWEB
- www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-readnvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-jw5g-f64p-6x78ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-1776ghsaADVISORY
- camaleon.websiteghsaWEB
- camaleon.websitenvdProduct
- github.com/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.ymlghsaWEB
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