Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.1 until 42.3.3, Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow. Most apps will crash and some may perform incorrect buffer allocations in the Node.js Buffer API resulting in unexpected truncation or allocation. This vulnerability is fixed in 42.3.3.
Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-q6m5-f73j-m9mc | Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 23 Jun 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Electron
Electron electron |
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| Vendors & Products |
Electron
Electron electron |
Tue, 23 Jun 2026 18:30:00 +0000
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| Metrics |
ssvc
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Tue, 23 Jun 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.1 until 42.3.3, Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow. Most apps will crash and some may perform incorrect buffer allocations in the Node.js Buffer API resulting in unexpected truncation or allocation. This vulnerability is fixed in 42.3.3. | |
| Title | Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow | |
| Weaknesses | CWE-120 | |
| References |
| |
| Metrics |
cvssV4_0
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-23T17:47:47.594Z
Reserved: 2026-06-12T17:13:32.278Z
Link: CVE-2026-54257
Updated: 2026-06-23T17:47:41.615Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-06-23T22:00:09Z
Weaknesses
Github GHSA