Immutable used by browser-sync is vulnerable to Prototype Pollution
Author: AllThingsSmittyCreated Mar 6, 2026Updated Jul 22, 2026
I received a Dependabot security alert for a repo that's using browser-sync 3.0.4 concerning Immutable being vulnerable to Prototype Pollution:
Dependabot cannot update immutable to a non-vulnerable version The latest possible version that can be installed is
3.8.2because of the following conflicting dependencies:[email protected] requires immutable@^3 [email protected] requires immutable@^3 via [email protected] No patched version available for immutable The earliest fixed version is 4.3.8.
Transitive dependency immutable 3.8.2 is introduced via browser-sync 3.0.4 -> immutable 3.8.2
Is there a plan for a browser-sync update to handle this?
Source: BrowserSync/browser-sync