CVE-2026-118132VulnerabilityPublished 27 Oct 2026

NextChat version 2.16.1 contains a client‑side cross‑site scripting (XSS) vulnerability in the Plugin Editor due to

Source GCVE Database

Authoritative record:CVE-2026-118132· High

Not known to be exploited.

Data as of 27 Oct 2026, 19:31 UTC

Severity

High

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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-whxc-wj8p-jg38

What to do

Affected software

Product	Affected	Fixed in
NextChatNextChat	Affected =2.16.1	Fixed in–
GitHubchatgptnextweb/NextChat`pkg:github/chatgptnextweb/NextChat`Other threats	Affected =2.16.1	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, users should avoid loading OpenAPI plugin schemas from untrusted remote URLs in the Plugin Editor to prevent exploitation.

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 without proper sanitization. An attacker can craft a malicious OpenAPI schema hosted remotely and trick a user into loading it, leading to arbitrary JavaScript execution within the NextChat application context. Exploitation could expose JavaScript-readable cookies and other client-side data tied to NextChat.

References

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