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CVE-2026-23520 PUBLISHED CVSS 9.100000381469727 CRITICAL

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 projects through the API, an attacker can create a project that specifies one of these lifecycle labels with a malicious command. When an administrator later triggers a container update (either manually or via scheduled update checks), Arcane reads the lifecycle label and executes its value as a shell command inside the container. This vulnerability is fixed in 1.13.0.

EPSS 0.03% · 9.5th percentile

Risk Scores

CVSS v3.1
9.100000381469727
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS Score
0.03%
9.5th percentile

Affected Products

VendorProductVersions
github.comgetarcaneapp/arcane/backend0
arcanearcane0
getarcaneapparcane< 1.13.0

Timeline

References

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