CVE-2026-118132: NextChat · Cross-site Scripting
Affects NextChatSource CVE Database V5
Not known to be exploited.
Data as of 27 Oct 2026, 17:57 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 27 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| NextChatNextChat | Affected
| Fixed in– |
GitHubchatgptnextweb/NextChatpkg:github/chatgptnextweb/NextChatOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should avoid loading plugin schemas from untrusted or remote URLs until a fix is released. Monitor vendor advisories for updates regarding remediation.
Description
NextChat version 2.16.1 has a client-side cross-site scripting (XSS) vulnerability in its Plugin Editor. This flaw arises from unsafe rendering of externally supplied OpenAPI plugin schema content using React's dangerouslySetInnerHTML without proper sanitization. An attacker can host a malicious OpenAPI schema and trick a user into loading it, leading to arbitrary JavaScript execution within the NextChat application context. Exploitation could expose JavaScript-accessible cookies and other client-side data.