CVE-2026-10032 — Arbitrary JavaScript Execution via openUrl in @a2ui/web_core
The openUrl function in @a2ui/web_core passes an agent-controlled URL directly to window.open() without validating the URI scheme. A malicious agent can supply a javascript: URI…
Published: 2026-08-04 · CVSS: 6.1 · CVSS 4.0
The openUrl function in @a2ui/web_core passes an agent-controlled URL directly to window.open() without validating the URI scheme. A malicious agent can supply a javascript: URI as the url argument of a Button component's functionCall action. When the user clicks the rendered button, arbitrary JavaScript executes in the victim application's browser origin, constituting a stored/reflected XSS with Critical severity. No non-default configuration is required; the Basic Catalog is enabled by default.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7