CVE-2026-91944 — crawl4ai before 0.9.3 DOM-based XSS via Playground UI
crawl4ai versions before 0.9.3 contain a DOM-based cross-site scripting vulnerability in the Playground UI where the forceHighlightElement() function assigns textContent back to…
Published: 2026-09-15 · CVSS: 5.1 · CVSS 4.0
crawl4ai versions before 0.9.3 contain a DOM-based cross-site scripting vulnerability in the Playground UI where the forceHighlightElement() function assigns textContent back to innerHTML, re-parsing JSON responses as HTML. Attackers can inject malicious scripts through crawled page content like the page title to steal the operator's API token from sessionStorage and gain full server control.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7