Answer in brief
CVE-2026-102677 records a High severity (CVSS 7.8) vulnerability in Electron: Sandboxed preload code cache can be poisoned by a compromised renderer. The current sources do not mark it as known exploited. The current feed maps electron/electron (generic), electron (npm), electron (npm), electron (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps electron/electron (generic), electron (npm), electron (npm), electron (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| electron/electrongeneric | >=42.3.3 <42.10.0 || >=43.0.0-beta.1 <43.5.0 || >=44.0.0-alpha.1 <44.0.0-beta.6 | 42.10.0, 43.5.0, 44.0.0-beta.6 |
| electronnpm | >=42.3.3,<42.10.0 | 42.10.0 |
| electronnpm | >=43.0.0-beta.1,<43.5.0 | 43.5.0 |
| electronnpm | >=44.0.0-alpha.1,<44.0.0-beta.6 | 44.0.0-beta.6 |
Published upstream
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 29, 2026
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.
Quoted source text, attributed separately from HOL analysis.