CVE-2026-57572

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

State: Published
Severity: 10.0 Critical
Published: Jul 6, 2026
Updated: Jul 8, 2026
Reserved: Jun 24, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	10.0 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
crawl4aiunclecode	< 0.9.0Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.