Improperly Controlled Modification of Dynamically-Determined Object Attributes

Overview org.webjars.npm:vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Improperly Controlled Modification of Dynamically-Determined Object Attributes via the BaseHandler.set trap in lib/bridge.js. An...

GHSA-C4CF-2HGV-2QV6 vm2's Bridge Proxy set trap ignores receiver parameter, enabling host object property injection via prototype chain

Summary The BaseHandler.set trap in bridge.js line 1231 ignores the receiver parameter and unconditionally writes to the host target object. Per the Proxy set trap specification, when receiver !== proxy e.g., when a child object inherits from the proxy via Object.create, the property assignment...

vm2's Bridge Proxy set trap ignores receiver parameter, enabling host object property injection via prototype chain

Summary The BaseHandler.set trap in bridge.js line 1231 ignores the receiver parameter and unconditionally writes to the host target object. Per the Proxy set trap specification, when receiver !== proxy e.g., when a child object inherits from the proxy via Object.create, the property assignment...