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CVE-2026-56259

Crawl4AI - LLM Credential Exfiltration via base_url and Environment Variable Resolution

CVSS 4.0 8.8 HIGHCVSS 3.1 8.2 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-56259

Published

Crawl4AI before 0.8.8 contains credential exfiltration vulnerabilities in the Docker API server that allow attackers to redirect LLM API calls to attacker-controlled endpoints and read arbitrary environment variables. Attackers can exploit the unauthenticated /md, /llm, and /llm/job endpoints by supplying a malicious base_url parameter and setting api_token to env:VARIABLE_NAME to exfiltrate provider API keys and server secrets including JWT SECRET_KEY for authentication bypass.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-56259

Published

Crawl4AI

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Crawl4AI",
                    "product": "Crawl4AI",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:pypi/crawl4ai",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "0.8.8"
                        },
                        {
                            "version": "0.8.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON