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...

CVE-2026-25966

ImageMagick is free and open-source software used for editing and manipulating digital images. The shipped "secure" security policy includes a rule intended to prevent reading/writing from standard streams. However, ImageMagick also supports fd: pseudo-filenames e.g., fd:0, fd:1. Prior to version...

CVE-2026-25966

CVE-2026-25966 concerns ImageMagick’s security policy bypass via fd: pseudo-filenames (e.g., fd:0, fd:1). Prior to 7.1.2-15 and 6.9.13-40, the policy did not block this path form, allowing potential local access to stdin/stdout. A patch was added to more secure policies by default in 7.1.2-15/6.9...