An issue was discovered in Concrete CMS through 8.5.5. Authenticated path traversal leads to to remote code execution via uploaded PHP code, related to the bFilename parameter.

An issue was discovered in Concrete CMS through 8.5.5. There is unauthenticated stored XSS in blog comments via the website field.

An issue was discovered in Concrete CMS through 8.5.5. There is an SVG sanitizer bypass.

An issue was discovered in Concrete CMS through 8.5.5. There is XSS via Markdown Comments.

An issue was discovered in Concrete CMS through 8.5.5. Path Traversal can lead to Arbitrary File Reading and SSRF.

An issue was discovered in Concrete CMS through 8.5.5. Path Traversal leading to RCE via external form by adding a regular expression.

An issue was discovered in Concrete CMS through 8.5.5. Fetching the update json scheme over HTTP leads to remote code execution.

An issue was discovered in Concrete CMS through 8.5.5. Arbitrary File deletion can occur via PHAR deserialization in is_dir (PHP Object Injection associated with the __wakeup magic method).

An issue was discovered in Concrete CMS through 8.5.5. Stored XSS can occur in Conversations when the Active Conversation Editor is set to Rich Text.

A CSRF in Concrete CMS version 8.5.5 and below allows an attacker to duplicate files which can lead to UI inconvenience, and exhaustion of disk space.Credit for discovery: "Solar Security CMS Research Team"