Is there a public exploit for CVE-2026-66297?

No public exploit for CVE-2026-66297 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-66297?

CVE-2026-66297 scores CVSS 5 (v4.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 2.41%.

What does CVE-2026-66297 affect?

CVE-2026-66297 affects livebook-dev livebook.

5.0 Medium

Improper Neutralization of Special Elements used in an OS Command (OS Command Injection) vulnerability in livebook-dev livebook allows…

CVE-2026-66297

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.dockerinstructions/2 and LivebookWeb.Hub.Teams.DeploymentGroupAgentComponent.flyinstructions/4 in lib/livebookweb/live/hub/teams/deploymentgroupagentcomponent.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.onlinedockerinfo/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.…

Assessment

CVSS: 5 (v4.0)
Severity: Medium
EPSS: 2.41% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 5 August 2026
Last updated: 10 November 2026
Affected: livebook-dev · livebook
Assigner: EEF

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

At the source

EUVD (ENISA)

References

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