{"id":"CVE-2026-1776","aliases":["GHSA-jw5g-f64p-6x78"],"url":"https://o3.security/vulnerability/CVE-2026-1776","summary":"Camaleon CMS AWS Uploader Authenticated Path Traversal Arbitrary File Read","details":"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":"2026-03-09T21:08:06.600Z","modified":"2026-08-12T03:51:20.701675107Z","cvss":null,"epss":{"score":0.00732,"percentile":0.51542,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"camaleon_cms","fixedVersion":null}],"fix":{"url":"https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af","label":"owen2345/camaleon-cms@f54a77e"},"references":[{"type":"WEB","url":"https://camaleon.website/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1776.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1776"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read"},{"type":"REPORT","url":"https://github.com/owen2345/camaleon-cms/pull/1127"},{"type":"FIX","url":"https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af"},{"type":"PACKAGE","url":"https://github.com/owen2345/camaleon-cms"},{"type":"WEB","url":"https://camaleon.website"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.yml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:20.701675107Z"}}