CVE
CVE-2026-54257
Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow
Impact
Most apps will crash and some may perform incorrect buffer allocations in the Node.js Buffer API resulting in unexpected truncation or allocation.
Workarounds
No workarounds. Do not use these impacted Electron releases
Fixed Versions
42.3.3
For more information
If you have any questions or comments about this advisory, email us at security@electronjs.org
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request
CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
-
C
H
U
0
-
C
H
U
-
Related Resources
No items found.
References
https://github.com/electron/electron/security/advisories/GHSA-q6m5-f73j-m9mc, https://github.com/electron/electron