GHSA-gjwq-9v8p-47w7
Concrete CMS's RSS Displayer block accepts a feed URL from any page editor and fetches it server-side without validation
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | concrete5/concrete5 | < 9.5.1 | 9.5.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
In Concrete CMS 9.5.0 and below, the RSS Displayer block accepts a feed URL from any page editor and fetches it server-side without validation enabling redirect-to-internal bypasses.
References
External links from the advisory. They lead to third-party sites.