A weakness has been identified in ractivejs ractive up to 1.4.4. Impacted is the function Ractive#set of the component Keypath Handler. Executing a manipulation can lead to improperly controlled modification of object prototype attributes. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

A prototype pollution vulnerability has been identified in ractivejs/ractive up to version 1.4.4. The flaw exists in the Ractive#set function within the Keypath Handler component, allowing improperly controlled modification of object prototype attributes. The vulnerability can be exploited remotely, and a public exploit is already available, increasing the risk of active attacks. The project maintainers were notified via an issue report but have not yet responded or released a patch. The unpatched status combined with public exploit availability makes this a high-severity concern. Prototype pollution vulnerabilities can lead to application logic bypass, denial of service, or remote code execution depending on the context. Users of ractivejs ractive up to version 1.4.4 are advised to monitor for patches and apply mitigations as available.