GHSA-5c9j-mhmv-5xgx

Source

https://github.com/advisories/GHSA-5c9j-mhmv-5xgx

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-5c9j-mhmv-5xgx/GHSA-5c9j-mhmv-5xgx.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-5c9j-mhmv-5xgx

Aliases

CVE-2026-70603

Published

2026-08-05T15:57:03Z

Modified

2026-08-05T16:11:06Z

Severity

6.0 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N CVSS Calculator

Summary

Electron: shell.openPath path validation bypass via embedded null byte

Details

Impact

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. Node's fs APIs already reject paths containing null bytes, so apps that call fs.existsSync(), fs.stat(), or similar before shell.openPath() are not affected. Apps that do not call shell.openPath() with untrusted input are not affected.

Workarounds

Reject any path containing a null byte before passing it to shell.openPath():

if (filePath.includes('\0')) throw new Error('invalid path');

Fixed Versions

42.0.0-beta.1
41.1.1
40.9.0
39.8.6

For more information

If you have any questions or comments about this advisory, email us at security@electronjs.org

Database specific

{
    "cwe_ids":  [
        "CWE-158",
        "CWE-20"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-08-05T15:57:03Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}

References

Affected packages

npm / electron

Package

Name: electron; View open source insights on deps.dev
Purl: pkg:npm/electron

Affected ranges

Type: SEMVER
Events: Introduced

42.0.0-alpha.1

Fixed

42.0.0-beta.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-5c9j-mhmv-5xgx/GHSA-5c9j-mhmv-5xgx.json"

npm / electron

Package

Name: electron; View open source insights on deps.dev
Purl: pkg:npm/electron

Affected ranges

Type: SEMVER
Events: Introduced

41.0.0-alpha.1

Fixed

41.1.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-5c9j-mhmv-5xgx/GHSA-5c9j-mhmv-5xgx.json"

npm / electron

Package

Name: electron; View open source insights on deps.dev
Purl: pkg:npm/electron

Affected ranges

Type: SEMVER
Events: Introduced

40.0.0-alpha.1

Fixed

40.9.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-5c9j-mhmv-5xgx/GHSA-5c9j-mhmv-5xgx.json"

npm / electron

Package

Name: electron; View open source insights on deps.dev
Purl: pkg:npm/electron

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

39.8.6

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-5c9j-mhmv-5xgx/GHSA-5c9j-mhmv-5xgx.json"