BookStack before version 0.25.5 has a vulnerability where a user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process. This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application. The issue was addressed in a series of patches in versions 0.25.3, 0.25.4 and 0.25.5. Users should upgrade to at least v0.25.5 to avoid this vulnerability.
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval").
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
| Link | Tags |
|---|---|
| https://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hx | third party advisory |
| https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3 | release notes |
| https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4 | release notes |
| https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5 | release notes |