{"action":"Upgrade electron to 42.3.3 or later.","affected":[{"fixed":"42.3.3","introduced":"42.3.1"}],"component":"electron","cve_ids":["CVE-2026-54257"],"ecosystem":"npm","epss":0.00428,"exploited":false,"fixed_versions":["42.3.3"],"ghsa_id":"GHSA-q6m5-f73j-m9mc","id":"tcs_01M5KG5E6SHQ78DRVAGFVTEEB8","modified_at":"2026-07-20T21:15:24.427733273Z","published_at":"2026-06-15T20:20:24Z","references":["https://osv.dev/vulnerability/GHSA-q6m5-f73j-m9mc","https://github.com/electron/electron/security/advisories/GHSA-q6m5-f73j-m9mc","https://nvd.nist.gov/vuln/detail/CVE-2026-54257","https://github.com/electron/electron"],"severity":{"label":"critical"},"sources":[{"source":"osv","source_id":"GHSA-q6m5-f73j-m9mc","url":"https://osv.dev/vulnerability/GHSA-q6m5-f73j-m9mc"}],"summary":"Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow"}