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A GitHub-reviewed security advisory, not necessarily under active exploitation the way our CISA KEV advisories are, but a real, disclosed vulnerability in an open-source dependency.
Affected packages
Vulnerable: >= 42.3.3, < 42.10.0
Patched in 42.10.0
Vulnerable: >= 43.0.0-beta.1, < 43.5.0
Patched in 43.5.0
Vulnerable: >= 44.0.0-alpha.1, < 44.0.0-beta.6
Patched in 44.0.0-beta.6
Details
The cache Electron keeps for sandboxed preload scripts did not verify that a cached entry matched the preload it was served for. A compromised renderer could use this to run its own code in the preload context on a later load.
Apps are only affected if they load untrusted content. Apps that do not load untrusted content are not affected.
There are no app side workarounds, you must update to a patched version of Electron.
44.0.0-beta.643.5.0 42.10.0If you have any questions or comments about this advisory, email us at [email protected]
EPSS, exploit probability
Low0.10%
estimated chance of real-world exploitation in the next 30 days, higher than 0.8% of every CVE FIRST.org scores
Refreshed 11/14/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.
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