Live › vulnerability › CVE-2026-118132
Go to dashboardNextChat 2.16.1 renders OpenAPI plugin schemas fetched from a remote URL with dangerouslySetInnerHTML and no sanitization. A user who loads a malicious schema through the Plugin Editor lets an attacker run JavaScript in the NextChat origin, reading JavaScript-readable cookies and client-side data.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-27 18:32 UTC. All times on this page are UTC.
Teams that run NextChat 2.16.1 and let users load OpenAPI plugin schemas from remote URLs through the Plugin Editor are exposed. Deployments that do not use the Plugin Editor or only use trusted, local schemas can likely skip it, though the sources do not confirm this.
No product ranges from the sources yet.
unknown for other versions.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
NextChat version 2.16.1 contains a client‑side cross‑site scripting (XSS) vulnerability in the Plugin Editor due to unsafe rendering of externally supplied OpenAPI plugin schema content. When a plugin schema is loaded from a remote URL, the returned content is stored in plugin.content and later rendered using React’s dangerouslySetInnerHTML without proper sanitization. An attacker can host a malicious OpenAPI schema containing HTML or JavaScript markup and trick a user into loading it through the Plugin Editor, resulting in arbitrary JavaScript execution in the NextChat origin. Successful exploitation allows access to JavaScript‑readable cookies and other client‑side data associated with the NextChat application.
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