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  4. CVE 2026 105238 chatgptnextweb nextchat proxy fallback proxyts
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Back to active CVEs
Medium · CVSS 6.9CVE-2026-105238

ChatGPTNextWeb NextChat Proxy Fallback proxy.ts proxyHandler server-side request forgeryCVE-2026-105238

Answer in brief

CVE-2026-105238 records a Medium severity (CVSS 6.9) vulnerability in ChatGPTNextWeb NextChat Proxy Fallback proxy.ts proxyHandler server-side request forgery. The current sources do not mark it as known exploited. The current feed maps ChatGPTNextWeb/NextChat (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 5, 2026Updated Oct 5, 2026Source checked Oct 5, 2026First seen by HOL Oct 5, 2026Material review Oct 5, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ChatGPTNextWeb/NextChat (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ChatGPTNextWeb/NextChatgeneric2.16.0 || 2.16.1Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ChatGPTNextWeb/NextChat.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 5, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
Upstream source description

A flaw has been found in ChatGPTNextWeb NextChat up to 2.16.1. This vulnerability affects the function proxyHandler of the file app/api/proxy.ts of the component Proxy Fallback Handler. This manipulation of the argument x-base-url causes server-side request forgery. It is possible to initiate the attack remotely. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.

Quoted source text, attributed separately from HOL analysis.

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  • WordPress B Blocks plugin <= 2.1.8 - Cross Site Scripting (XSS) vulnerabilitySame generic ecosystem
  • WordPress Image Photo Gallery Final Tiles Grid plugin <= 3.6.13 - Cross Site Scripting (XSS) vulnerabilitySame generic ecosystem
  • Mitel MiVoice Office 400 view system files path traversalSame generic ecosystem

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Oct 5, 2026
References
7 linked sources
Open source record