CVE-2026-25966 — ImageMagick's Security Policy Bypass through config/policy-secure.xml via "fd handler" leads to stdin/stdout access

Description (CNA)

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:<n> pseudo-filenames (e.g., fd:0, fd:1). Prior to versions 7.1.2-15 and 6.9.13-40, this path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of "no stdin/stdout." Versions 7.1.2-15 and 6.9.13-40 contain a patch by including a change to the more secure policies by default. As a workaround, add the change to one's security policy manually.

Affected (CNA)

Vendor / product	Versions
ImageMagick / ImageMagick	affected >= 7.0.0, < 7.1.2-15; affected < 6.9.13-40

CWE

CWE-284

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.