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01 Record

CVE-2026-34771

Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks

HighPUBLISHEDCNA: GitHub_M
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
View raw JSON

02 Description

Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks

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
0.28% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 21.0% of scored records. A rank, not a probability.
NVD base score
8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-07-24.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

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
2026-04-03 23:47Z6 MO AGO
Last updated
2026-07-15 01:03Z3 MO AGO
Reserved
2026-03-30
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
Data version
5.2
Document digest
d7c561b1c2bdff0a4233b2ad15be288dd971cff7d1afdb47f58620a47b18ff3c

05 Affected products

VendorProductVersionsPlatforms
electronelectron< 38.8.6, >= 39.0.0-alpha.1, < 39.8.0, >= 40.0.0-alpha.1, < 40.7.0, >= 41.0.0-alpha.1, < 41.0.0-beta.8—

06 References