CVE-2026-57572

Received Received - Intake

Command Injection in Crawl4AI Docker API

Publication date: 2026-07-06

Last updated on: 2026-07-06

Assigner: GitHub, Inc.

Description

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-06

Last Modified

2026-07-06

Generated

2026-07-07

AI Q&A

2026-07-07

EPSS Evaluated

N/A

NVD

CVE-2026-57572

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-88	The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

CVE-2026-57572 is a vulnerability in Crawl4AI, an open-source web crawler and scraper. Before version 0.9.0, the Docker API server accepted user-supplied arguments (browser_config.extra_args) that were passed directly into Chromium's launch commands. An attacker could exploit this by injecting malicious Chromium switches, including the --no-zygote flag, which allows the attacker to replace a child-process launch command. This results in Chromium executing an attacker-controlled command within the container as the runtime user.

Because the Docker API is unauthenticated by default, an attacker only needs to send a single request to achieve arbitrary command execution inside the container.

Impact Analysis

This vulnerability allows an attacker to execute arbitrary commands inside the container running Crawl4AI without any authentication. This can lead to full compromise of the container environment, including data theft, service disruption, or further attacks on the host system or network.

Given the CVSS score of 10.0, this is a critical security issue that can severely impact the confidentiality, integrity, and availability of your systems.

Mitigation Strategies

To mitigate this vulnerability, upgrade Crawl4AI to version 0.9.0 or later, where the issue has been fixed.

Since the Docker API server is unauthenticated by default and allows arbitrary command execution via crafted requests, ensure that the Docker API is not exposed to untrusted networks or users.

Hi! I’m here to help you understand CVE-2026-57572. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70