CVE-2026-115570: Electron certificate blocklist bypass in Node.js TLS

CVE-2026-115570 · Severity: high · CVSS 7.4 · Published 2026-10-23

Electron is a framework for building cross-platform desktop applications using web technologies. The framework failed to block compromised eMudhra intermediate certificates in Node.js networking components, allowing an attacker with a malicious certificate and network access to impersonate legitimate TLS servers and intercept encrypted communications to affected applications.

Technologies: Electron, electron (npm). Vendors: Electron, npm.

Quick answers

Is CVE-2026-115570 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-115570 being exploited in the wild.
How severe is CVE-2026-115570?
High severity, with a CVSS score of 7.4, published 23 October 2026.
Which products and versions are affected?
Electron Before 42.11.16, 43.8.1, 44.9.1, and 45.0.0-beta.6; electron (npm) >= 45.0.0-alpha.1, < 45.0.0-beta.6, SEMVER:introduced=45.0.0-alpha.1,fixed=45.0.0-beta.6.
Is there a fix for CVE-2026-115570?
Yes. electron (npm): upgrade to 45.0.0-beta.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-115570 attacked?
It is attacked over the network or from the adjacent network, in a software library.
Am I affected by CVE-2026-115570?
Check whether you run Electron or electron (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • electron (npm): upgrade to 45.0.0-beta.6 or later
    npm install electron@45.0.0-beta.6

Technical details

Electron's Chromium engine maintained a compiled-in SPKI (SubjectPublicKeyInfo) blocklist of revoked certificates, but Node.js tls, https, and fetch modules lacked equivalent filtering, allowing a compromised certificate chain to fail in the renderer but succeed in Node.js components. An attacker with a certificate issued through a blocked intermediate and capability to intercept network traffic can perform man-in-the-middle attacks. The fix wraps X509_verify_cert to check Node.js contexts against a synchronized blocklist and report CERT_REVOKED for blocked chains.

Affected products

  • Electron Electron Before 42.11.16, 43.8.1, 44.9.1, and 45.0.0-beta.6

Identifiers

  • CVE-2026-115570
  • GHSA-jr5w-w6x2-84p9

Timeline

  • 2026-10-23: disclosed
  • 2026-10-19: patched

References

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