Docker
CVE-2026-23520
CRITICAL
GHSA-gjqq-6r35-w3r8
Severity by source
Sources disagree (Low–Critical)AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionGitHub Advisory
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.
AnalysisAI
Arcane Docker management tool before 1.13.0 has command injection in lifecycle labels. Container labels are passed to /bin/sh -c without sanitization, enabling RCE. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Authenticated user account required; Arcane updater service must be enabled with lifecycle label processing active; victim must trigger container update operation that invokes pre-update or post-update lifecycle labels. Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 9.0 (Critical). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker sets a container label containing a reverse shell command. When Arcane updates the container, the lifecycle hook executes the injected command. |
| Remediation | Update Arcane. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Within 24 hours: Identify all affected systems and apply vendor patches immediately. …
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Vendor StatusVendor
SUSE
Severity: LowShare
External POC / Exploit Code
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