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01 Record

CVE-2026-66297

Unescaped deployment environment variables in generated setup commands

MediumPUBLISHEDCNA: EEF
CNA base score5.0 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
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02 Description

Unescaped deployment environment variables in generated setup commands

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
2.41% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 83.9% of scored records. A rank, not a probability.
NVD base score
5.0 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
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
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-24.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-05 19:43Z2 MO AGO
Last updated
2026-08-06 13:04Z2 MO AGO
Reserved
2026-07-24
Assigning CNA
EEF
Record state
PUBLISHED
Severity
Medium (CVSS 5.0)
CNA CVSS vector
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
Weaknesses
  • CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base
Data version
5.2
Document digest
e176ac64e8c89fa37918a13156f6bec1528ac4c889290bddee540fd88260593e

05 Affected products

VendorProductVersionsPlatforms
livebook-devlivebook0.13.0 to < 0.18.7, 0.19.0 to < 0.19.9, 0.13.0-cuda12 to < 0.18.7-cuda12, 0.19.0-cuda12 to < 0.19.9-cuda12, 7cf4af5c10ec645f55a10f30e5661c54f6a6b319 to < *—

06 References