Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://cna.erlef.org/cves/CVE-2026-66297.html
- https://github.com/livebook-dev/livebook/commit/0c2487326bbb37cb1eb43bb2f76eb93a
- https://github.com/livebook-dev/livebook/commit/b2a8416d149043132fe5a14ed611e0fe
- https://github.com/livebook-dev/livebook/commit/f8fe9c62cb8bfc1dd0ccda4ea4a57c5e
- https://github.com/livebook-dev/livebook/security/advisories/GHSA-qpjc-w5mm-73mj
- https://osv.dev/vulnerability/EEF-CVE-2026-66297
- https://github.com/livebook-dev/livebook/security/advisories/GHSA-qpjc-w5mm-73mj
FAQ
What is CVE-2026-66297?
CVE-2026-66297 is a documented vulnerability. 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. Live...
How severe is CVE-2026-66297?
CVSS scoring is not yet available for CVE-2026-66297. Check NVD for updates.
Is there a patch for CVE-2026-66297?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.