CVE-2026-23520CWE-78

Arcane has a Command Injection in Arcane Updater Lifecycle Labels Enables RCE

Critical · published January 15, 2026

CVSS v3.1
9.1
EPSS
2%
Percentile
78.9
In the wild
Unconfirmed
What it is

🚨 A command injection like this in your Docker management tool is a recipe for disaster! 😱 Think of it as a restaurant that allows customers to write their own orders; if they slip in a recipe for chaos, the kitchen (your Docker container) will cook it up without question! 🍽️ An attacker could wield this vulnerability to execute arbitrary commands within your containers, leading to potentially catastrophic outcomes such as data breaches, unauthorized access, or complete system takeover. It's as if a mischievous diner orders the chef to prepare something highly dangerous instead of a meal—yikes! 🔥

Put simply

Think of it as a restaurant that allows customers to write their own orders; if they slip in a recipe for chaos, the kitchen (your Docker container) will cook it up without question! 🍽️ This command injection vulnerability in Arcane's updater service occurs because lifecycle labels are executed as shell commands without proper sanitization. Any authenticated user can exploit this by specifying malicious commands in project labels, which are executed during container updates.

What to do

An attacker could wield this vulnerability to execute arbitrary commands within your containers, leading to potentially catastrophic outcomes such as data breaches, unauthorized access, or complete system takeover. It's as if a mischievous diner orders the chef to prepare something highly dangerous instead of a meal—yikes! 🔥 Upgrade Arcane to version 1.13.0 immediately to close this critical gap. Review your current project labels for any suspicious commands and lock down user permissions to restrict who can create projects via the API. 🛡️ You've got this! With a quick patch and a security audit, you'll have your Docker environment safe and secure in no time! 💪✨

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01846 · 78.9th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-01-15T19:20Z
EPSS history
Timeline
  • 15 JAN 19:20Z
    Arcane has a Command Injection in Arcane Updater Lifecycle Labels Enables RCE
    cvelistv5