{"id":"CVE-2026-56264","summary":"Crawl4AI - Arbitrary JavaScript Execution via /execute_js Endpoint","details":"Crawl4AI before 0.8.7 contains an arbitrary JavaScript execution vulnerability in the Docker API server's /execute_js endpoint, which accepts and executes arbitrary user-supplied JavaScript in the server's browser context with --disable-web-security enabled. An attacker can execute arbitrary JavaScript and, combined with the browser's relaxed security settings, perform server-side request forgery against internal services.","aliases":["CVE-2026-56261","CVE-2026-56262","CVE-2026-56263","CVE-2026-56265","CVE-2026-56266","GHSA-365w-hqf6-vxfg","GHSA-53rg-46cm-4g2v","GHSA-8qrg-7j2f-rf2h","GHSA-g2pv-76hm-j4x9","GHSA-xrfj-6m49-wfmm","PYSEC-2026-229","PYSEC-2026-230","PYSEC-2026-239","PYSEC-2026-596","PYSEC-2026-798"],"modified":"2026-07-11T04:11:25.369616976Z","published":"2026-06-30T22:08:26.600Z","database_specific":{"cwe_ids":["CWE-94"],"cna_assigner":"VulnCheck","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56264.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56264.json"},{"type":"ADVISORY","url":"https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56264"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/crawl4ai-arbitrary-javascript-execution-via-execute-js-endpoint"},{"type":"PACKAGE","url":"https://github.com/unclecode/crawl4ai"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/unclecode/crawl4ai","events":[{"introduced":"0"},{"fixed":"7b280d36b150b544bf0994285b4755dca18c2149"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"extracted_events":[{"introduced":"0"},{"fixed":"0.8.7"}],"cpe":"cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:*"}}],"versions":["docker-rebuild-v0.8.6","v0.8.6","v0.7.4","v0.7.3","v0.7.2","v0.7.1","v0.7.0","vr0.6.3","v0.6.3","vr0.6.0","vr0.6.0rc1","v0.5.0.post1","v0.4.243","v0.4.24","v0.3.745","v.3.72","v0.3.6","0.3.4","v0.3.3","v0.3.0","v0.2.77","v0.0.75","v0.2.74","v0.2.73","v0.2.72","v0.2.71","v0.2.7","v0.2.6","v0.2.4","v0.2.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56264.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}