GHSA-w72q-x6w3-7rj3

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

Published

2026-08-04

Modified

2026-10-02

Sources

github-advisory

Summary

## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-72qq-p3r5-f7wq. This link is maintained to preserve external references. ## Original 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.

Affected packages

Remediation: No patched version is listed by GitHub.

References

• https://github.com/advisories/GHSA-w72q-x6w3-7rj3