Answer in brief
CVE-2026-70607 records a Medium severity (CVSS 5.3) vulnerability in Electron: window.open features string controls some window options considered privileged. The current sources do not mark it as known exploited. The current feed maps electron/electron (generic), electron (npm), electron (npm), electron (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-70607 records a Medium severity (CVSS 5.3) vulnerability in Electron: window.open features string controls some window options considered privileged. The current sources do not mark it as known exploited. The current feed maps electron/electron (generic), electron (npm), electron (npm), electron (npm) and additional mapped packages. 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 5.3. 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) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| electron/electrongeneric | < 39.8.8 || >= 40.0.0-alpha.1, < 40.9.0 || >= 41.0.0-alpha.1, < 41.2.1 || >= 42.0.0-alpha.1, < 42.0.0-beta.3 | Not reported |
| electronnpm | <39.8.8 | 39.8.8 |
| electronnpm | >=40.0.0-alpha.1,<40.9.0 | 40.9.0 |
| electronnpm | >=41.0.0-alpha.1,<41.2.1 | 41.2.1 |
| electronnpm | >=42.0.0-alpha.1,<42.0.0-beta.3 | 42.0.0-beta.3 |
Published upstream
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, some window options supplied by web content in the window.open() features string were applied to the new BrowserWindow without an allowlist. Untrusted content could set window options it should not control, including options that cause the main process to access attacker-chosen file or network paths, when untrusted content can call window.open() and the app does not override child window options via setWindowOpenHandler or overrideBrowserWindowOptions. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Quoted source text, attributed separately from HOL analysis.
CVSS is 5.3. 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) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| electron/electrongeneric | < 39.8.8 || >= 40.0.0-alpha.1, < 40.9.0 || >= 41.0.0-alpha.1, < 41.2.1 || >= 42.0.0-alpha.1, < 42.0.0-beta.3 | Not reported |
| electronnpm | <39.8.8 | 39.8.8 |
| electronnpm | >=40.0.0-alpha.1,<40.9.0 | 40.9.0 |
| electronnpm | >=41.0.0-alpha.1,<41.2.1 | 41.2.1 |
| electronnpm | >=42.0.0-alpha.1,<42.0.0-beta.3 | 42.0.0-beta.3 |
Published upstream
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, some window options supplied by web content in the window.open() features string were applied to the new BrowserWindow without an allowlist. Untrusted content could set window options it should not control, including options that cause the main process to access attacker-chosen file or network paths, when untrusted content can call window.open() and the app does not override child window options via setWindowOpenHandler or overrideBrowserWindowOptions. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Quoted source text, attributed separately from HOL analysis.