CVE-2026-126866 · Other
NO FIX YET · SEE WHAT TO DO
Google Chrome versions before 157.0.8103.78 have an incorrect authorization flaw in extensions. A remote attacker who tricks a user into installing a crafted Chrome extension can execute arbitrary code inside the browser sandbox.
first public Nov 11, 2026 · 1 source
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Anyone running Google Chrome older than 157.0.8103.78 is exposed, and the attack needs a user to install a crafted extension. Managed fleets that pin Chrome versions or restrict extension installs are less exposed.
Not affected if chrome-updated, extensions-restricted
Who cares browser-extensions, chrome, linux, macos, windows
chrome://version; versions below 157.0.8103.78 are affected.157.0.8103.78Incorrect authorization in Extensions in Google Chrome prior to 157.0.8103.78 allowed a remote attacker leveraging social engineering to execute arbitrary code inside the sandbox via a crafted Chrome extension. (Chromium security severity: High)
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