CVE-2026-34771: Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS

Q: How do I fix CVE-2026-34771?

electron: upgrade to 38.8.6, 39.8.0, 40.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-34771 being exploited?

CVE-2026-34771 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34771 affect?

CVE-2026-34771 affects electron. Severity is high (CVSS 7.5). Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() ma

Routine

HIGH 7.5UPGRADE

CVE-2026-34771 is a high-severity flaw (CVSS 7.5) affecting electron. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending,

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-416, CWE-364
Published	2026-04-04
Last modified	2026-07-24

Publisher (CNA): GitHub, Inc. · Vendor: electronjs

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-04 00:16 UTCPublished CVE record published
2026-07-24 22:10 UTCUpdated Record last modified

electronjs electron UPGRADE

Affected: < 38.8.6 · >= 39.0.0 and < 39.8.0 · >= 40.0.0 and < 40.7.0 · 41.0.0 alpha1 · 41.0.0 alpha2 · 41.0.0 alpha3 · 41.0.0 alpha4 · 41.0.0 alpha5

Fixed in: 38.8.6, 39.8.0, 40.7.0

Safe to downgrade to: a release before 39.0.0

1. Check installed version

npm ls electron

2. UPGRADE to 38.8.6

npm install electron@">=38.8.6"

3. If no update is available yet, DOWNGRADE to a release before 39.0.0

npm view electron versions npm install electron@"<39.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34771?

electron: upgrade to 38.8.6, 39.8.0, 40.7.0. Exact commands for each OS are on this page.

Is CVE-2026-34771 being exploited?

CVE-2026-34771 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34771 affect?

CVE-2026-34771 affects electron. Severity is high (CVSS 7.5). Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() ma

How urgent is CVE-2026-34771?

Priority 32/100. High severity

Software pages

Electron vulnerabilities

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References

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