Vulnerability 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 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Arcane | Arcane | < 1.13.0 |
Related Weaknesses (CWE)
References
- https://github.com/getarcaneapp/arcane/commit/5a9c2f92e11f86f8997da8c672844468f9Exploit
- https://github.com/getarcaneapp/arcane/pull/1468Issue Tracking
- https://github.com/getarcaneapp/arcane/releases/tag/v1.13.0Release Notes
- https://github.com/getarcaneapp/arcane/security/advisories/GHSA-gjqq-6r35-w3r8Vendor Advisory
FAQ
What is CVE-2026-23520?
CVE-2026-23520 is a vulnerability with a CVSS score of 9.0 (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....
How severe is CVE-2026-23520?
CVE-2026-23520 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-23520?
Check the references section above for vendor advisories and patch information. Affected products include: Arcane Arcane.