Electron is widely used for desktop apps (Slack, VSCode, Teams). Sandbox bypass can let untrusted web content assume app origin, risking broad user/session/data compromise across organizations.
CVE-2026-102674
Electron sandbox bypass lets sandboxed content gain app origin.
Is CVE-2026-102674 being exploited?
Not confirmed. CVE-2026-102674 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-102674?
CVE-2026-102674 is rated High with a CVSS score of 8.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-102674?
Yes. A fix has been recorded for CVE-2026-102674. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-102674 affect?
CVE-2026-102674 affects Electron <41.10.6, Electron <42.9.2, Electron <43.4.1, Electron <44.0.0-beta.5, and 1 further product or version. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-102674?
Upgrade Electron to 41.10.6 / 42.9.2 / 43.4.1 or later; block/validate untrusted popups.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Sandbox escape: untrusted sandboxed content can open windows under the app's full origin, enabling origin-based privilege escalation, UI spoofing, and potential data/session access.
Patch when possible
- affected< 41.10.6
- affected>= 42.0.0-alpha.1 and < 42.9.2
- affected>= 43.0.0-alpha.1 and < 43.4.1
- affected>= 44.0.0-alpha.1 and < 44.0.0-beta.5
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.