{"id":"CVE-2026-91942","summary":"crawl4ai before 0.9.3 Cross-Site Scripting via innerHTML","details":"crawl4ai before 0.9.3 contains a DOM-based cross-site scripting vulnerability in the Docker Playground UI that assigns untrusted crawl results to element.innerHTML. Attackers can craft malicious PDFs with event-handler markup to execute JavaScript in the Playground origin and steal API tokens from sessionStorage for authenticated API abuse.","aliases":["GHSA-7g3g-vhm6-79f3"],"modified":"2026-09-18T03:30:50.212618897Z","published":"2026-09-15T15:18:02.423Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91942.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-79"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91942.json"},{"type":"ADVISORY","url":"https://github.com/unclecode/crawl4ai/security/advisories/GHSA-7g3g-vhm6-79f3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91942"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/crawl4ai-before-0.9.3-cross-site-scripting-via-innerhtml"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/unclecode/crawl4ai","events":[{"introduced":"0"},{"fixed":"4bcd5fa8a56000ce103dd499e8ecdff2439f3e9c"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION"],"extracted_events":[{"introduced":"0"},{"fixed":"0.9.3"},{"introduced":"crawl4ai"}]}}],"versions":["v0.9.2","docker-rebuild-v0.9.2","v0.9.1","docker-rebuild-v0.9.1","v0.9.0","docker-rebuild-v0.9.0","v0.8.9","docker-rebuild-v0.8.9","v0.8.8","docker-rebuild-v0.8.8","v0.8.7","docker-rebuild-v0.8.7","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-2026-91942.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}]}