CVE-2026-118129 | jeremyckahn Chitchatter up to f82538633813c854a81a8b2112a2f6ba17b39cbc PostMessage src/Bootstrap.tsx isConfigMessageEvent parentDomain improper authentication
A vulnerability was found in jeremyckahn Chitchatter up to f82538633813c854a81a8b2112a2f6ba17b39cbc. It has been rated as critical. The affected element is the function isConfigMessageEvent of the file src/Bootstrap.tsx of the component PostMessage Handler. Performing a manipulation of the argument parentDomain results in improper authentication.
This vulnerability is known as CVE-2026-118129. Remote exploitation of the attack is possible. Furthermore, an exploit is available.
This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. It is recommended to apply a patch to fix this issue.
The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.