CVE-2026-57572CWE-88CWE-94

Crawl4AI: Unauthenticated RCE via Chromium launch-argument injection in browser_config.extra_args

Critical · published July 6, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
60.5
In the wild
Unconfirmed
What it is

Crawl4AI is an open-source LLM-friendly web crawler and scraper. Prior to 0.9.0, the Docker API server accepted request-supplied browser_config.extra_args, which flowed into Chromium's launch arguments. An attacker could inject Chromium switches that replace a child-process launch command together with --no-zygote, causing Chromium to fork or exec an attacker-controlled command as the container's runtime user. The Docker API is unauthenticated by default, so a single request yields arbitrary command execution. This issue is fixed in version 0.9.0.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00939 · 60.5th percentile
Weaknesses
CWE-88 · Improper Neutralization of Argument Delimiters in a Command ('Argument Injection'); CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-07-06T20:16Z
EPSS history
Timeline
  • 06 JUL 20:16Z
    Crawl4AI: Unauthenticated RCE via Chromium launch-argument injection in browser_config.extra_args
    cvelistv5