CVE-2026-55594 in ImageMagick
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-51 and 7.1.2-26, a missing depth check in the MVG decoder will result in a stack overflow when a crafted image is provided. This issue has been fixed in versions 6.9.13-51 and 7.1.2-26.
Quick answer
ImageMagick should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- ImageMagick 7.0.1-0 through versions before 7.1.2-26
- ImageMagick 6 before 6.9.13-51
Fixed versions
- ImageMagick 7.1.2-26 or later
- ImageMagick 6.9.13-51 or later
How to fix it
CVE-2026-55594 affects ImageMagick. The issue means the service may slow down, crash, or use too many resources. Treat it as a priority if this software is reachable by users, admins, browsers, or the network. Update to ImageMagick 7.1.2-26 or later, or follow the linked vendor advisory if your branch needs a backport.
- Inventory every ImageMagick install, package, server, browser, or managed device in use.
- Compare installed versions with the affected range: ImageMagick 7.0.1-0 through versions before 7.1.2-26; ImageMagick 6 before 6.9.13-51.
- Update to ImageMagick 7.1.2-26 or later.
- If you cannot update today, restrict access to trusted users and trusted networks only.
- Review logs for crashes, failed requests, privilege changes, unusual data access, or exploit alerts.
- Rotate secrets, tokens, and passwords if exposure or abuse is suspected.
- Document the update and keep the advisory link with the change record.
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Verify the fix
- Confirm the installed version matches the fixed guidance: ImageMagick 7.1.2-26 or later; ImageMagick 6.9.13-51 or later.
- Confirm risky admin, API, browser, or network exposure is reduced.
- Retest the affected workflow after the update or mitigation.
- Review logs again after patching for repeated suspicious activity.
- Run a new Fixnx scan where the affected software is part of the public site.
Related categories
Trusted references
FAQ
What is affected by CVE-2026-55594?
ImageMagick versions listed as affected should be reviewed: ImageMagick 7.0.1-0 through versions before 7.1.2-26, ImageMagick 6 before 6.9.13-51.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.