---
id: CVE-2026-109237
title: >-
  Crawl4AI from 0.9.0 before 0.9.4 contains an untrusted-config gate bypass that
  allows non-admin API clients to construct forbidden config objects by wrapping
  them in dict-type wrappers
summary: >-
  Crawl4AI from 0.9.0 before 0.9.4 contains an untrusted-config gate bypass that
  allows non-admin API clients to construct forbidden config objects by wrapping
  them in dict-type wrappers. Attackers can send a laundered LLMConfig with
  api_t…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-502
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:14.233'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109237'
references:
  - url: >-
      https://github.com/unclecode/crawl4ai/security/advisories/GHSA-5w5p-vcv6-mm3f
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/crawl4ai-0.9.0-before-0.9.4-untrusted-config-gate-bypass-leaks-environment-variables
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.171Z'
---

## Overview

Crawl4AI from 0.9.0 before 0.9.4 contains an untrusted-config gate bypass that allows non-admin API clients to construct forbidden config objects by wrapping them in dict-type wrappers. Attackers can send a laundered LLMConfig with api_token set to an env reference via /config/dump to read SECRET_KEY and provider keys, enabling admin JWT forgery.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.