{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-56264: Crawl4AI - Arbitrary JavaScript Execution via /execute_js Endpoint","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-56264","status":"final","version":"1","initial_release_date":"2026-06-30T22:08:26.600Z","current_release_date":"2026-06-30T22:08:26.600Z","revision_history":[{"date":"2026-06-30T22:08:26.600Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"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.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-56264 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-56264"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-56264"},{"category":"external","summary":"https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg","url":"https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg"},{"category":"external","summary":"https://github.com/unclecode/crawl4ai","url":"https://github.com/unclecode/crawl4ai"},{"category":"external","summary":"VulnCheck Advisory: Crawl4AI - Arbitrary JavaScript Execution via /execute_js Endpoint","url":"https://www.vulncheck.com/advisories/crawl4ai-arbitrary-javascript-execution-via-execute-js-endpoint"}]},"product_tree":{"branches":[{"category":"vendor","name":"Crawl4AI","branches":[{"category":"product_name","name":"Crawl4AI","branches":[{"category":"product_version_range","name":"<0.8.7","product":{"name":"Crawl4AI Crawl4AI <0.8.7","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:crawl4ai:crawl4ai:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"0.8.7","product":{"name":"Crawl4AI Crawl4AI 0.8.7","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:crawl4ai:crawl4ai:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-56264","title":"Crawl4AI - Arbitrary JavaScript Execution via /execute_js Endpoint","notes":[{"category":"description","text":"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.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"],"fixed":["CSAFPID-2"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"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","baseScore":9.2,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 0.8.7.","product_ids":["CSAFPID-1"]}]}]}