---
id: CVE-2026-109239
title: >-
  Crawl4AI before 0.9.4 contains a blind server-side request forgery
  vulnerability in RobotsParser.can_fetch that lets unauthenticated attackers
  bypass Docker server egress controls
summary: >-
  Crawl4AI before 0.9.4 contains a blind server-side request forgery
  vulnerability in RobotsParser.can_fetch that lets unauthenticated attackers
  bypass Docker server egress controls. Attackers can enable check_robots_txt
  and use redirects …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-918
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:14.570'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109239'
references:
  - url: >-
      https://github.com/unclecode/crawl4ai/security/advisories/GHSA-f77g-77vp-r96v
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/crawl4ai-before-0.9.4-blind-ssrf-via-robotsparser-can-fetch-robots-txt-fetch
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.172Z'
---

## Overview

Crawl4AI before 0.9.4 contains a blind server-side request forgery vulnerability in RobotsParser.can_fetch that lets unauthenticated attackers bypass Docker server egress controls. Attackers can enable check_robots_txt and use redirects or DNS rebinding to reach internal, loopback, or cloud-metadata addresses for service discovery.

## Remediation

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