HighCVE-2026-115570

    Electron: Mitigation for compromised eMudhra intermediate certificates (CVE-2026-115570)

    Published Last modified Sources: OSV, CVE.org, Hersteller

    What is affected, what to do

    Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 42.11.16, 43.8.1, 44.9.1, and 45.0.0-beta.6, Electron does not block compromised eMudhra intermediate certificates in Chromium networking, Node.js tls, Node.js https, or Node.js fetch.

    Update Electron to version 42.11.16.

    Affected
    • Electron gte 43.0.0-alpha.1, < 43.8.1..*
    • Electron lt *..42.11.16
    Fixed in
    • Electron 42.11.16

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    7.4

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: Vendor (CNA), CVSS v3

    7.4

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: OSV, CVE.org, Hersteller

    0.4 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 31.5

    Show all metrics
    Severity
    High
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    74.92 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    7.4 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    7.4
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    0.4 %
    Low — model estimates < 1% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    31.5
    Elevated — this CVE ranks above at least 10% of all CVEs scored today.
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-299

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 42.11.16, 43.8.1, 44.9.1, and 45.0.0-beta.6, Electron does not block compromised eMudhra intermediate certificates in Chromium networking, Node.js tls, Node.js https, or Node.js fetch. An attacker who holds a certificate issued through one of these intermediates and can intercept network traffic can impersonate a TLS server to an affected application. This issue is fixed in versions 42.11.16, 43.8.1, 44.9.1, and 45.0.0-beta.6.

    Source: OSV (Open Source Vulnerabilities), NVD (NIST), cvelistv5, CVE.org (MITRE), GitHub Security Advisories

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    electronelectron
    • < 42.11.16
    • ≥ 43.0.0-alpha.1, < 43.8.1
    • 42.11.16
    • —
    npmelectron
    • < 42.11.16
    • 45.0.0-alpha.1
    • 43.0.0-alpha.1
    • —
    • >= 44.0.0-alpha.1, < 44.9.1
    • >= 45.0.0-alpha.1, < 45.0.0-beta.6
    • >= 43.0.0-alpha.1, < 43.8.1
    • 44.0.0-alpha.1
    • 42.11.16
    • 45.0.0-beta.6
    • 43.8.1
    • 42.11.16
    • 44.9.1
    • 45.0.0-beta.6
    • 43.8.1
    • 44.9.1

    Vendors and products

    Weakness classes (CWE)

    • CWE-299Improper Check for Certificate Revocation

      Base

      The product does not check or incorrectly checks the revocation status of a certificate, which may cause it to use a certificate that has been compromised.

      Entry at MITRE CWE-299

    References & sources

    • github.comelectron/electron/security/advisories/GHSA-jr5w-w6x2-84p9x_refsource_CONFIRM, web
    • github.comelectron/electron/pull/55127x_refsource_MISC, web
    • github.comelectron/electron/pull/55128x_refsource_MISC, web
    • github.comelectron/electron/pull/55129x_refsource_MISC, web
    • github.comelectron/electron/pull/55130x_refsource_MISC, web
    • github.comelectron/electron/commit/093583c71be71c85453e6e225137bf2af755fb…x_refsource_MISC, web
    • github.comelectron/electron/commit/1d2f13b1985444a38abf389db38228ac42f5bc…x_refsource_MISC, web
    • github.comelectron/electron/commit/817c43f925677eb88034bfba4f0b8dfd28e7ad…x_refsource_MISC, web
    • github.comelectron/electron/commit/e02265be96c5e13ae43644ef482b718e1e8004…x_refsource_MISC, web
    • github.comelectron/electron/releases/tag/v42.11.16x_refsource_MISC, web
    • github.comelectron/electron/releases/tag/v43.8.1x_refsource_MISC, web
    • github.comelectron/electron/releases/tag/v44.9.1x_refsource_MISC, web
    • github.comelectron/electron/releases/tag/v45.0.0-beta.6x_refsource_MISC, web
    • github.comelectron/electronpackage

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedCISA ADP

      CISA assessment (SSVC): exploitation: none known, automatable: no

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      SSVC assessmentadded
      —
      {"id":"CVE-2026-115570","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-10-23T20:45:42.599802Z"}

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    2. ReceivedGitHub

      CVSS V3.1: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

      Weakness type: CWE-299

      Description added or changed

      Show 17 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Descriptionadded
      —
      Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 42.11.16, 43.8.1, 44.9.1, and 45.0.0-beta.6, Electron does not block compromised eMudhra intermediate certificates in Chromium networking, Node.js tls, Node.js https, or Node.js fetch. An attacker who holds a certificate issued through one of these intermediates and can intercept network traffic can impersonate a TLS server to an affected application. This issue is fixed in versions 42.11.16, 43.8.1, 44.9.1, and 45.0.0-beta.6.
      CVSSadded
      —
      AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
      Weakness type (CWE)added
      —
      CWE-299
      Affected versions (publisher)added
      —
      New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/115xxx/CVE-2026-115570.json">CVE-2026-115570</a>
      Referenceadded
      —
      https://github.com/electron/electron/commit/093583c71be71c85453e6e225137bf2af755fbcc
      Referenceadded
      —
      https://github.com/electron/electron/commit/1d2f13b1985444a38abf389db38228ac42f5bcad
      Referenceadded
      —
      https://github.com/electron/electron/commit/817c43f925677eb88034bfba4f0b8dfd28e7ad20
      Referenceadded
      —
      https://github.com/electron/electron/commit/e02265be96c5e13ae43644ef482b718e1e800499
      Referenceadded
      —
      https://github.com/electron/electron/pull/55127
      Referenceadded
      —
      https://github.com/electron/electron/pull/55128
      Referenceadded
      —
      https://github.com/electron/electron/pull/55129
      Referenceadded
      —
      https://github.com/electron/electron/pull/55130
      Referenceadded
      —
      https://github.com/electron/electron/releases/tag/v42.11.16
      Referenceadded
      —
      https://github.com/electron/electron/releases/tag/v43.8.1
      Referenceadded
      —
      https://github.com/electron/electron/releases/tag/v44.9.1
      Referenceadded
      —
      https://github.com/electron/electron/releases/tag/v45.0.0-beta.6
      Referenceadded
      —
      https://github.com/electron/electron/security/advisories/GHSA-jr5w-w6x2-84p9

      Source identifier: security-advisories@github.com

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