CVE-2026-56377 ImageMagick - Policy Bypass via Incorrect Path Validation

Medium 4.8 Published 30 Jun 2026 Updated 29 Oct 2026

Attackers can bypass security policies to write or truncate arbitrary files outside intended boundaries in ImageMagick.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-56377?

CVE-2026-56377 is a medium-severity path traversal vulnerability in Imagemagick Imagemagick, published on 30 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

ImageMagick before 7.1.2-24 contains an incorrect policy check that allows attackers to create or truncate files disallowed by security policies. Remote attackers can bypass path policy restrictions in sandboxed conversion services to write arbitrary files outside intended boundaries.

Weakness: CWE-22

Which versions are affected by CVE-2026-56377?

It affects 1 product.

Products include Imagemagick Imagemagick.

How do I fix CVE-2026-56377?

Upgrade to a fixed version.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-56377 being exploited?

There is no known exploitation of CVE-2026-56377 in the wild and no public exploit code.

All Imagemagick Imagemagick vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-56377, ECHO-3287-72af-a82d, GHSA-gm48-c7f2-v67p, GHSA-r8hq-c3qh-xq9j, JLSEC-2026-1058, MINI-r746-h9m3-q6h9 and 1 more.