EUVD-2026-41936Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Default-unauthenticated network API gives AV:N/AC:L/PR:N/UI:N with full C/I/A from RCE; I assess S:U since execution stays within the container's authority, whereas NVD scored S:C (10.0).
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
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.
Articles & Coverage 2
AnalysisAI
Remote code execution in Crawl4AI's Docker API server (versions prior to 0.9.0) lets unauthenticated attackers run arbitrary commands as the container runtime user. The server passes request-supplied browser_config.extra_args directly into Chromium's launch arguments, enabling argument injection (CWE-88) of a malicious child-process launcher combined with --no-zygote. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the Crawl4AI Docker API server and that the request path accepts browser_config.extra_args (the default behavior prior to 0.9.0). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine top-priority issue, not a high-CVSS-but-low-risk artifact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker scans for internet-exposed Crawl4AI Docker API endpoints and sends a single crafted crawl request whose browser_config.extra_args includes a child-process-launcher override plus --no-zygote pointing at an attacker-chosen command. When Crawl4AI launches Chromium with those injected switches, Chromium execs the attacker's command as the container runtime user, yielding immediate arbitrary code execution. … |
| Remediation | Vendor-released patch: upgrade to Crawl4AI 0.9.0, which is the authoritative fix per the GHSA advisory (https://github.com/unclecode/crawl4ai/security/advisories/GHSA-r253-r9jw-qg44) and commit 60886d1a0c52682e4c83a7cef9dfac417fff6bd2. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Inventory systems running Crawl4AI prior to v0.9.0; restrict Docker API network access to trusted networks only or disable entirely if not operationally required. …
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External POC / Exploit Code
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