A Remote Code Execution vulnerability has been found in the HordeImage library when using the "Im" backend that utilizes ImageMagick's "convert" utility. It's not exploitable through any Horde application, because the code path to the vulnerability is not used by any Horde code. Custom applications using the HordeImage library might be affected. This vulnerability affects all versions of HordeImage from 2.0.0 to 2.5.1, and is fixed in 2.5.2. The problem is missing input validation of the index field in raw() during construction of an ImageMagick command line.

Remote Code Execution was found in HordeImage 2.x before 2.5.0 via a crafted GET request. Exploitation requires authentication.