@a2ui/web_core: `openUrl` permits `javascript:` URI execution via agent-supplied button actions

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

• @a2ui/web_core 0.10.2Fixed version · GitHub Advisories · npm package @a2ui/web_core: upgrade to 0.10.2 or later (affected >= 0.9.0, < 0.10.2)

[ Packages ]Affected open-source packages

• @a2ui/web_core npmAffected >= 0.9.0, < 0.10.2 · fixed in 0.10.2 · GHSA-72qq-p3r5-f7wq

[ References ]References

• github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq