CRITICAL

CVE-2026-23520

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

CVSS v3

CRITICAL

EPSS Score

1.9 %

exploit probability, as of 2026-09-25

CISA KEV

known exploited

Exploitation

none

SSVC status

Description

Arcane provides modern docker management. Prior to 1.13.0, Arcane has a command injection in the updater service. Arcane’s updater service supported lifecycle labels com.getarcaneapp.arcane.lifecycle.pre-update and com.getarcaneapp.arcane.lifecycle.post-update that allowed defining a command to run before or after a container update. The label value is passed directly to /bin/sh -c without sanitization or validation. Because any authenticated user (not limited to administrators) can create proje

Technical details

Published: 2026-01-15
Last Modified: 2026-02-05

Frequently asked questions

What is CVE-2026-23520?

Is CVE-2026-23520 actively exploited?

Active exploitation of CVE-2026-23520 has not been confirmed. Its EPSS score was 1.9% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-23520?

CVE-2026-23520 has a CVSS v3 base score of 9 (CRITICAL severity).

Is CVE-2026-23520 affecting your environment?

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