---
id: CVE-2026-119121
title: Crawl4AI 0.9.0 before 0.9.5 JavaScript Injection via css_selector and wait_for
summary: >-
  Crawl4AI from 0.9.0 before 0.9.5 contains a JavaScript injection vulnerability
  in the Docker API server that allows authenticated API clients to run
  arbitrary JavaScript in the crawl page via allowlisted css_selector and
  wait_for fields.…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-95
vendor: unclecode
product: crawl4ai
affected:
  - crawl4ai >= 0.9.0 < 0.9.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-29T16:16:09.064813Z'
published: '2026-10-29'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T17:15:06.009Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119121'
references:
  - url: >-
      https://github.com/unclecode/crawl4ai/security/advisories/GHSA-qj46-wp7m-rgj8
    label: GitHub Security Advisory (GHSA-qj46-wp7m-rgj8)
  - url: >-
      https://www.vulncheck.com/advisories/crawl4ai-0.9.0-before-0.9.5-javascript-injection-via-css-selector-and-wait-for
    label: >-
      VulnCheck Advisory: Crawl4AI 0.9.0 before 0.9.5 JavaScript Injection via
      css_selector and wait_for
tags:
  - cve.org
epss: 0.00286
epssPercentile: 0.21182
ingestedAt: '2026-11-01T21:01:32.752Z'
---

## Overview

Crawl4AI from 0.9.0 before 0.9.5 contains a JavaScript injection vulnerability in the Docker API server that allows authenticated API clients to run arbitrary JavaScript in the crawl page via allowlisted css_selector and wait_for fields. Attackers can inject quotes into css_selector or supply js: conditions in wait_for, bypassing the js_code block to alter page state and returned crawl content.

## Affected

- `crawl4ai >= 0.9.0 < 0.9.5`

## Remediation

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