CVE-2026-56379
Description
A flaw was found in ImageMagick. This command injection vulnerability in the SVG (Scalable Vector Graphics) decoder allows a remote attacker to craft malicious SVG files. When these files are processed, the injected Magick Vector Graphics (MVG) commands can execute, potentially leading to arbitrary code execution on the affected system.
Statement
An Important-rated vulnerability in the default configuration of Mojolicious::Plugin::Web::Auth::OAuth2 allows remote attackers to hijack user sessions. Because the plugin defaults to generating predictable security tokens, an attacker can bypass protections and launch Cross-Site Request Forgery (CSRF) attacks against the application.
Mitigation
Restrict ImageMagick processing capabilities via policy.xml, disabling the SVG coder and restricting delegates to prevent injection escalation to OS command execution. Enforce mandatory access control (SELinux/AppArmor) combined with seccomp syscall filtering to block execve. For systemd services, enable NoNewPrivileges, ProtectSystem=strict, ProtectHome=true, and PrivateDevices=true.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.1 | 5.5 | 8.1 |
| Attack Vector | Network | Local | Network |
| Attack Complexity | High | Low | High |
| Privileges Required | None | None | None |
| User Interaction | None | Required | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | High | None | High |
| Integrity Impact | High | High | High |
| Availability Impact | High | None | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
cve.org: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Confidentiality,Integrity,Availability,Non-Repudiation
Technical Impact: Execute Unauthorized Code or Commands; DoS: Crash, Exit, or Restart; Read Files or Directories; Modify Files or Directories; Read Application Data; Modify Application Data; Hide Activities
Attackers could execute unauthorized operating system commands, which could then be used to disable the product, or read and modify data for which the attacker does not have permissions to access directly. Since the targeted application is directly executing the commands instead of the attacker, any malicious activities may appear to come from the application or the application's owner.
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