Missing policy checks in -concatenate operation before 7.1.2-26 (fixed)
CVE-2026-55628 Published on July 1, 2026

ImageMagick: Policy Bypass in concatenate operation due to missing checks
In versions prior to 7.1.2-26he, the `-concatenate` operation is missing policy checks, potentially resulting in both reading and writing to paths disallowed by the security policy. This issue has been fixed in version 7.1.2-26.

NVD

Vulnerability Analysis

CVE-2026-55628 is exploitable with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Types

External Control of File Name or Path

The software allows user input to control or influence paths or file names that are used in filesystem operations.

What is an AuthZ Vulnerability?

The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

CVE-2026-55628 has been classified to as an AuthZ vulnerability or weakness.


Products Associated with CVE-2026-55628

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Affected Versions

ImageMagick Version < 7.1.2-26 is affected by CVE-2026-55628