EUVD-2026-53601Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
PR:H for required env-var write privileges, UI:R for victim execution, S:C because impact lands on the victim's machine rather than the Livebook server.
Primary rating from Vendor (6b3ad84c-e1a6-4bf7-a703-f496b71e49db).
CVSS VectorVendor: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Lifecycle Timeline
3DescriptionCVE.org
Improper Neutralization of Special Elements used in an OS Command (OS Command Injection) vulnerability in livebook-dev livebook allows command injection into generated deployment setup commands.
LivebookWeb.Hub.Teams.DeploymentGroupAgentComponent.docker_instructions/2 and LivebookWeb.Hub.Teams.DeploymentGroupAgentComponent.fly_instructions/4 in lib/livebook_web/live/hub/teams/deployment_group_agent_component.ex interpolate deployment group environment variable values into the generated Docker and Fly.io setup commands without shell escaping. The values originate from the deployment group configuration and reach the sinks through Livebook.Hubs.Dockerfile.online_docker_info/3.
Both sinks place the value inside a double-quoted shell word, so a value containing a command substitution such as $(...) or backticks is evaluated by the shell without any need to break out of the quoting, and a literal double quote terminates the quoted word and allows arbitrary further tokens. The generated command is displayed in the Livebook web interface with a copy button, so a user who copies it and runs it without reviewing it first executes the injected commands on their own machine, under their own account.
An attacker requires privileges sufficient to set deployment group environment variables, while the resulting code execution occurs on the machine of whoever runs the generated command. The Kubernetes instructions are not affected, because they render the same values into a YAML manifest with escaping rather than into a shell command.
This issue affects livebook: from 0.13.0 before 0.18.7 and from 0.19.0 before 0.19.9.
AnalysisAI
Remote command injection in livebook-dev Livebook's deployment setup command generator allows an authenticated high-privilege attacker to poison Docker and Fly.io setup commands displayed in the web interface, causing arbitrary shell code to execute on the machine of any user who copies and runs the generated command. Affected versions span 0.13.0 through 0.18.6 and 0.19.0 through 0.19.8. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold privileges sufficient to write deployment group environment variables within a Livebook Teams hub - this is a High privilege level (PR:H in CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:H/UI:A/SC:H/SI:H/SA:H) accurately captures the asymmetric threat model: exploitation requires High privileges on the Livebook Teams instance to set deployment group environment variables, and then depends on Active user interaction - a secondary user must copy and run the generated command without reviewing it. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Livebook to version 0.18.7 or 0.19.9, both of which include the upstream fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
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