Severity: Critical
CVSS Score: 9.8
### Impact _What kind of vulnerability is it? Who is impacted?_ Remote code execution may be possible in web-accessible installations of Homarus in certain configurations. ### Patches _Has the problem been patched? What versions should users upgrade to?_ The issue has been patched in `islandora/crayfish:4.1.0` ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ The exploit requires making a request against the Homarus's `/convert` endpoint; therefore, the ability to exploit is much reduced if the microservice is not directly accessible from the Internet, so: Prevent general access from the Internet from hitting Homarus. Configure auth in Crayfish to be more strongly required, such that requests with `Authorization` headers that do not validate are rejected before the problematic CLI interpolation occurs. ### References _Are there any links users can visit to find out more?_ - XBOW-024-071