CVE-2026-57572: CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') in unclecode crawl4ai
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.
AI Analysis
Technical Summary
In crawl4ai versions before 0.9.0, the Docker API server accepted the browser_config.extra_args parameter from requests without proper sanitization. These arguments flowed into Chromium's launch commands, allowing an attacker to inject switches such as --no-zygote that replace child-process launch commands. This leads to arbitrary command execution within the container under the runtime user. Since the Docker API is unauthenticated by default, a single crafted request can exploit this vulnerability. The vulnerability is classified under CWE-88 (Improper Neutralization of Argument Delimiters) and CWE-94 (Improper Control of Generation of Code). The vulnerability has a CVSS 3.1 score of 10.0 (critical). It is fixed in crawl4ai version 0.9.0.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary commands inside the container running crawl4ai, potentially leading to full compromise of the container environment. Confidentiality, integrity, and availability of the affected system are fully impacted. Because the Docker API is unauthenticated by default, exploitation requires no privileges or user interaction.
Mitigation Recommendations
Upgrade crawl4ai to version 0.9.0 or later, where this vulnerability is fixed. Until upgrading, restrict access to the Docker API server to trusted users only, as it is unauthenticated by default. Patch status is confirmed fixed in version 0.9.0.
CVE-2026-57572: CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') in unclecode crawl4ai
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 v3.1
Score 10.0critical
Affected software
pkg:github/unclecode/crawl4aiRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In crawl4ai versions before 0.9.0, the Docker API server accepted the browser_config.extra_args parameter from requests without proper sanitization. These arguments flowed into Chromium's launch commands, allowing an attacker to inject switches such as --no-zygote that replace child-process launch commands. This leads to arbitrary command execution within the container under the runtime user. Since the Docker API is unauthenticated by default, a single crafted request can exploit this vulnerability. The vulnerability is classified under CWE-88 (Improper Neutralization of Argument Delimiters) and CWE-94 (Improper Control of Generation of Code). The vulnerability has a CVSS 3.1 score of 10.0 (critical). It is fixed in crawl4ai version 0.9.0.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary commands inside the container running crawl4ai, potentially leading to full compromise of the container environment. Confidentiality, integrity, and availability of the affected system are fully impacted. Because the Docker API is unauthenticated by default, exploitation requires no privileges or user interaction.
Mitigation Recommendations
Upgrade crawl4ai to version 0.9.0 or later, where this vulnerability is fixed. Until upgrading, restrict access to the Docker API server to trusted users only, as it is unauthenticated by default. Patch status is confirmed fixed in version 0.9.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-24T18:49:56.207Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4c11fc27e9c797192ee54d
Added to database: 07/06/2026, 20:37:16 UTC
Last enriched: 07/14/2026, 08:44:33 UTC
Last updated: 08/19/2026, 22:52:13 UTC
Views: 109
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.