RCE in Kidocode Crawl4ai
CVE-2026-57572
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Kidocode Crawl4ai
- Unclecode Crawl4ai — versions < 0.9.0
Weakness classification (CWE)
References
- github.com/unclecode/crawl4ai/security/advisories/GHSA-r253-r9jw-qg44 (Mitigation, Vendor Advisory)
- github.com/unclecode/crawl4ai/commit/60886d1a0c52682e4c83a7cef9dfac417fff6bd2 (Patch)
Frequently asked questions
- What is CVE-2026-57572?
- CVE-2026-57572 is a critical-severity vulnerability in Kidocode Crawl4ai, classified under Argument Injection. CVSS score: 10.0/10. Published 2026-07-06.
- How severe is CVE-2026-57572?
- Critical severity. CVSS v3 base score is 10.0 out of 10.