OS Command Injection Affecting open-webui package, versions <0.11.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-OPENWEBUI-18280241
  • published24 Jul 2026
  • disclosed6 Jul 2026

Introduced: 6 Jul 2026

NewCVE-2026-55798  (opens in a new tab)
CWE-78  (opens in a new tab)

How to fix?

Upgrade Chainguard open-webui to version 0.11.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream open-webui package and not the open-webui package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Pillow is a Python imaging library. Prior to 12.3.0, WindowsViewer.get_command() constructed a cmd.exe shell command by directly embedding a file path into an f-string without escaping and passed the result to subprocess.Popen(..., shell=True), allowing shell metacharacters in the file path to inject arbitrary cmd.exe commands. This issue is fixed in version 12.3.0.

CVSS Base Scores

version 3.1