Answer in brief
CVE-2026-70603 records a Medium severity (CVSS 6.0) vulnerability in Electron: shell.openPath path validation bypass via embedded null byte. 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 6.0. 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 | < 39.8.6 || >= 40.0.0-alpha.1, < 40.9.0 || >= 41.0.0-alpha.1, < 41.1.1 || >= 42.0.0-alpha.1, < 42.0.0-beta.1 | Not reported |
| electronnpm | >=42.0.0-alpha.1,<42.0.0-beta.1 | 42.0.0-beta.1 |
| electronnpm | >=41.0.0-alpha.1,<41.1.1 | 41.1.1 |
| electronnpm | >=40.0.0-alpha.1,<40.9.0 | 40.9.0 |
| electronnpm | <39.8.6 | 39.8.6 |
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 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1, shell.openPath() did not reject paths containing embedded null bytes. Apps that perform string-only validation of file paths, for example checking the file extension, before passing them to shell.openPath() could be bypassed, allowing an attacker-controlled path to open a different file than the one that passed validation. Apps are only affected if they pass paths derived from untrusted input to shell.openPath() and rely on string-based validation without a filesystem check. This issue is fixed in versions 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-70603 records a Medium severity (CVSS 6.0) vulnerability in Electron: shell.openPath path validation bypass via embedded null byte. 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 6.0. 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 | < 39.8.6 || >= 40.0.0-alpha.1, < 40.9.0 || >= 41.0.0-alpha.1, < 41.1.1 || >= 42.0.0-alpha.1, < 42.0.0-beta.1 | Not reported |
| electronnpm | >=42.0.0-alpha.1,<42.0.0-beta.1 | 42.0.0-beta.1 |
| electronnpm | >=41.0.0-alpha.1,<41.1.1 | 41.1.1 |
| electronnpm | >=40.0.0-alpha.1,<40.9.0 | 40.9.0 |
| electronnpm | <39.8.6 | 39.8.6 |
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 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1, shell.openPath() did not reject paths containing embedded null bytes. Apps that perform string-only validation of file paths, for example checking the file extension, before passing them to shell.openPath() could be bypassed, allowing an attacker-controlled path to open a different file than the one that passed validation. Apps are only affected if they pass paths derived from untrusted input to shell.openPath() and rely on string-based validation without a filesystem check. This issue is fixed in versions 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1.
Quoted source text, attributed separately from HOL analysis.