CVE-2026-10032
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
Product
@a2ui/web Core
PublishedAug 4, 2026
First seenAug 4, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- @a2ui/web_core0.10.2 or later
- google a2ui\/web_core0.10.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @a2ui/web_corenpm | 0.9.0 ≤ v < 0.10.2 | 0.10.2 |
| google a2ui\/web_core | 0.9.0 ≤ v < 0.10.2 | 0.10.2 |
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