GHSA-XWC6-V6G8-PW2H ImageMagick's Security Policy Bypass through config/policy-secure.xml via "fd handler" leads to stdin/stdout access

The shipped “secure” security policy includes a rule intended to prevent reading/writing from standard streams: xml However, ImageMagick also supports fd: pseudo-filenames e.g., fd:0, fd:1. This path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of...