CVE-2026-66297 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-66297MEDIUM

livebook-dev livebook — Unescaped deployment environment variables in generated setup commands

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   P   H   A   N   N   N    4.9   .0155   73.1     —

AFFECTED
  Product   Versions                                    Fixed
  livebook  0.13.0 –                                    —
  livebook  0.13.0 –                                    —
  livebook  7cf4af5c10ec645f55a10f30e5661c54f6a6b319 –  b2a8416d149043132fe5a14ed611e0fefc9dc9cd

TIMELINE
  Jul 24  Reserved by EEF
  Aug 5   EXPLOIT PUBLISHED — CVE-2026-66297 (livebook-dev livebook). Public exploit reference added.
  Aug 5   Published (CNA: EEF)
  Aug 10  EXPLOIT PUBLISHED — CVE-2026-66297 (livebook-dev livebook). Public exploit reference added.

CWE-78 · CNA: EEF · CVSS v4.0 · 6 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
July 24, 2026	Reserved	Reserved by EEF
August 5, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-66297 (livebook-dev livebook). Public exploit reference added.
August 5, 2026	Published	Published (CNA: EEF)
August 10, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-66297 (livebook-dev livebook). Public exploit reference added.

Affected

Affected products and packages — 3 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
livebook-dev	livebook	—	0.13.0	—
livebook-dev	livebook	—	0.13.0	—
livebook-dev	livebook	—	7cf4af5c10ec645f55a10f30e5661c54f6a6b319	b2a8416d149043132fe5a14ed611e0fefc9dc9cd

Weaknesses

CWE-78

References (6)

https://cna.erlef.org/cves/CVE-2026-66297.html [Vendor Advisory]
https://github.com/livebook-dev/livebook/commit/0c2487326bbb37cb1eb43bb2f76eb93ad9f8fd6b [Patch]
https://github.com/livebook-dev/livebook/commit/b2a8416d149043132fe5a14ed611e0fefc9dc9cd [Patch]
https://github.com/livebook-dev/livebook/commit/f8fe9c62cb8bfc1dd0ccda4ea4a57c5e91563c85 [Patch]
https://github.com/livebook-dev/livebook/security/advisories/GHSA-qpjc-w5mm-73mj [Exploit, Patch, Vendor Advisory]
https://osv.dev/vulnerability/EEF-CVE-2026-66297 [Third Party Advisory]

Authoritative record: CVE-2026-66297 at cve.org

Vendors: livebook-dev

Weaknesses: CWE-78

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-66297 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.