CVE-2026-46521

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.

How to fix CVE-2026-46521

To remediate CVE-2026-46521, upgrade the affected package to a fixed version below.

• Debian/imagemagick—no fix listed
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later
• —upgrade to 14.13.1 or later

Is CVE-2026-46521 being exploited?

No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-46521.

Affected packages (19)

• from 0
• from 0, < 14.13.1
• from 0, < 14.13.1
• from 0, < 14.13.1
• from 0, < 14.13.1
• from 0, < 14.13.1
• from 0, < 14.13.1
• from 0, < 14.13.1
• from 0, < 14.13.1
• from 0, < 14.13.1

CVSS scores

References (4)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-46521
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2026-46521
• PATCHgithub.com/ImageMagick/ImageMagick
• WEBgithub.com/ImageMagick/ImageMagick/security/advisories/GHSA-jcqp-6r6f-3mfx