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CVE-2026-23520— Arcane has a Command Injection in Arcane Updater Lifecycle Labels Enables RCE

Quick assessment

Affected
getarcaneapp arcane
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

arcane是Arcane开源的一个Docker管理软件。 Arcane 1.13.0之前版本存在操作系统命令注入漏洞，该漏洞源于更新程序服务存在命令注入，可能导致执行任意shell命令。

CVSS 9.1 · Critical EPSS 1.85% · P79
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I. Basic Information for CVE-2026-23520

Vulnerability Information
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Vulnerability Title
Arcane has a Command Injection in Arcane Updater Lifecycle Labels Enables RCE
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Arcane 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
arcane是Arcane开源的一个Docker管理软件。 Arcane 1.13.0之前版本存在操作系统命令注入漏洞，该漏洞源于更新程序服务存在命令注入，可能导致执行任意shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
getarcaneapp arcane < 1.13.0 -

II. Public POCs for CVE-2026-23520

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8621 chars
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III. Intelligence Information for CVE-2026-23520

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IV. Related Vulnerabilities

Same product: arcane
Same vendor: getarcaneapp
Same weakness: CWE-78

V. Comments for CVE-2026-23520

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