Camaleon CMS vulnerabilities

Camaleon CMS up to version 2.9.2 (fixed in commit 88ab703) contains a missing authorization vulnerability on the drafts endpoint. Any authenticated low-privileged user can create draft posts by bypassing role and permission checks, sending requests to the drafts endpoint using only session authentication.

A vulnerability in Camaleon CMS allows an authenticated user with custom field management permissions to execute arbitrary Ruby code. A malicious expression in the select_eval field is evaluated via instance_eval when rendering the post edit page.

Camaleon CMS 2.9.2 contains an improper authorization vulnerability in the administrator draft autosave endpoint. A low-privileged authenticated user can send an arbitrary post_id to POST /admin/post_type/<POST_TYPE_ID>/drafts and overwrite the draft associated with another user's post.

A path traversal vulnerability in Camaleon CMS versions 2.4.5.0 through 2.9.0 (prior to commit f54a77e) in the AWS S3 uploader implementation. Authenticated users can read arbitrary files from the web server's filesystem by manipulating the 'file' parameter in the download_private_file function.