# CVE-2026-57572: Crawl4AI: Unauthenticated RCE via Chromium launch-argument injection in browser_config.extra_args

> Unauthenticated attackers can execute arbitrary commands by injecting Chromium launch arguments in the Crawl4AI Docker API server.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Jul 2026
- **Updated:** 8 Jul 2026
- **Also known as:** GHSA-r253-r9jw-qg44, PYSEC-2026-2139

## What is CVE-2026-57572?

CVE-2026-57572 is a critical command injection vulnerability in unclecode crawl4ai, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-88 (Improper Neutralization of Argument Delimiters in a Command)

## Which versions are affected by CVE-2026-57572?

3 open source packages ship an affected version, including crawl4ai. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `crawl4ai` | PyPI | All versions | 0.9.0 |
| `crawl4ai` | PyPI | All versions | 0.9.0 |
| `crawl4ai` | PyPI | All versions | 0.9.0 |

Products: Kidocode Crawl4ai.

## How do I fix CVE-2026-57572?

Upgrade crawl4ai to 0.9.0 or later.

## Is CVE-2026-57572 being exploited?

There is no known exploitation of CVE-2026-57572 in the wild and no public exploit code.

## Other vulnerabilities in unclecode crawl4ai

- [CVE-2026-26216](https://insights.sbomify.com/CVE-2026-26216/): Crawl4AI < 0.8.0 Docker API Unauthenticated Remote Code Execution via Hooks Parameter (critical 10.0)
- [CVE-2026-53753](https://insights.sbomify.com/CVE-2026-53753/): Crawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker API (critical 9.8)
- [CVE-2026-57571](https://insights.sbomify.com/CVE-2026-57571/): Crawl4AI arbitrary file write via download filename path traversal (critical 9.6)
- [CVE-2026-56265](https://insights.sbomify.com/CVE-2026-56265/): Crawl4AI - Authentication Bypass via Hardcoded JWT Signing Key (critical 9.3)
- [CVE-2026-56261](https://insights.sbomify.com/CVE-2026-56261/): Crawl4AI - Server-Side Request Forgery via Webhook URLs (critical 9.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-57572 and fix it if it is affected.

What it is: CVE-2026-57572 is a critical command injection vulnerability in unclecode crawl4ai, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-57572 in the wild and no public exploit code.

Affected packages and fixed versions:
- crawl4ai (PyPI): affected all versions; fixed in 0.9.0
- crawl4ai (PyPI): affected all versions; fixed in 0.9.0
- crawl4ai (PyPI): affected all versions; fixed in 0.9.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-57572/ (Markdown: https://insights.sbomify.com/CVE-2026-57572/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-57572
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-57572
- OSV: https://osv.dev/vulnerability/CVE-2026-57572

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-57572/
Summaries are generated and may contain mistakes; the official description above is the record.