GHSA-q6m5-f73j-m9mc

Suggest an improvement
Source
https://github.com/advisories/GHSA-q6m5-f73j-m9mc
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-q6m5-f73j-m9mc/GHSA-q6m5-f73j-m9mc.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-q6m5-f73j-m9mc
Aliases
Published
2026-06-15T20:20:24Z
Modified
2026-07-20T21:15:24Z
Severity
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow
Details

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

Database specific 
{
    "cwe_ids":  [
        "CWE-120"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-06-15T20:20:24Z",
    "nvd_published_at":  "2026-06-23T18:18:07Z",
    "severity":  "CRITICAL"
}
References

Affected packages

npm / electron

Package

Name
electron
View open source insights on deps.dev
Purl
pkg:npm/electron

Affected ranges

Type
SEMVER
Events
Introduced
42.3.1
Fixed
42.3.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-q6m5-f73j-m9mc/GHSA-q6m5-f73j-m9mc.json"