synced 3 MIN AGO
01 Record

CVE-2026-66298

JS-view sandboxed output can synthesize keyboard events to trigger unconfirmed global shortcuts

HighPUBLISHEDCNA: EEF
CNA base score8.6 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
View raw JSON

02 Description

JS-view sandboxed output can synthesize keyboard events to trigger unconfirmed global shortcuts

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total 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
0.26% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 18.5% of scored records. A rank, not a probability.
NVD base score
8.6 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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 19:44Z2 MO AGO
Last updated
2026-08-06 13:08Z2 MO AGO
Reserved
2026-07-24
Assigning CNA
EEF
Record state
PUBLISHED
Severity
High (CVSS 8.6)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-346Origin Validation ErrorClass
Data version
5.2
Document digest
097293cb49536b894057e12cfb33a622c0ca289d27f5f5755e8b37966d87c848

05 Affected products

VendorProductVersionsPlatforms
livebook-devlivebook0.5.0 to < 0.18.7, 0.19.0 to < 0.19.9, 0.5.0-cuda12 to < 0.18.7-cuda12, 0.19.0-cuda12 to < 0.19.9-cuda12, 844242ba80a928d0d675416d312a58003cb7771b to < *—

06 References