Quick answers
- Is CVE-2026-57572 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-57572 being exploited in the wild.
- How severe is CVE-2026-57572?
- Critical severity, with a CVSS score of 10, published 6 July 2026.
- Which products and versions are affected?
- crawl4ai (PyPI) ECOSYSTEM:introduced=0,fixed=0.9.0.
- Is there a fix for CVE-2026-57572?
- Yes. crawl4ai (PyPI): upgrade to 0.9.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-57572 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-57572?
- Check whether you run crawl4ai (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- crawl4ai (PyPI): upgrade to 0.9.0 or later
pip install "crawl4ai>=0.9.0"
Technical details
The vulnerability is an argument injection flaw (CWE-88) in the Docker API server's handling of the 'browser_config.extra_args' field. Because the API is unauthenticated by default, a remote attacker can send a crafted request to endpoints like /crawl or /crawl/stream containing malicious Chromium switches (such as --utility-cmd-prefix or --renderer-cmd-prefix) combined with --no-zygote. This causes the underlying Chromium process to execute attacker-controlled commands as the container's runtime user. While version 0.8.9 attempted to mitigate this with a denylist, it was incomplete; version 0.9.0 fixes the issue by establishing a proper trust boundary and rejecting requests that attempt to use these sensitive configuration fields.
Affected products
- unclecode crawl4ai < 0.9.0
Identifiers
- CVE-2026-57572
- GHSA-r253-r9jw-qg44
- PYSEC-2026-2139
Timeline
- 2026-06-18: patched: Version 0.9.0 released to address the RCE.
- 2026-07-06: disclosed: CVE-2026-57572 published.