CVE-2026-70603 (GCVE-0-2026-70603)

Vulnerability from cvelistv5 – Published: 2026-08-05 15:56 – Updated: 2026-08-06 03:55
VLAI
Title
Electron: shell.openPath path validation bypass via embedded null byte
Summary
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.
Severity
6 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 00:00 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-158 - Improper Neutralization of Null Byte or NUL Character
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7595 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
electron electron Affected: < 39.8.6
Affected: >= 40.0.0-alpha.1, < 40.9.0
Affected: >= 41.0.0-alpha.1, < 41.1.1
Affected: >= 42.0.0-alpha.1, < 42.0.0-beta.1
guessed Create a notification for this product.
Show details on NVD website
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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