CVE-2026-10032 Details
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.
A cross-site scripting (XSS) vulnerability has been identified in the openUrl function of the @a2ui/web_core package, specifically in versions 0.9.0 through 0.10.1. The vulnerability arises because the function passes an agent-controlled URL directly to window.open() without validating the URI scheme. This flaw allows a malicious agent to inject a javascript: URI, which is executed as arbitrary JavaScript in the context of the victim application's browser origin. The issue is present by default, as the Basic Catalog is enabled automatically.
The vulnerability has been fixed in @a2ui/web_core versions 0.10.2, 0.10.3, and 0.10.4. Users should update to one of these versions.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| google a2ui/web core | >= 0.9.0, < 0.10.2 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 23, 2026 | Initial Analysis | [email protected] |
| Aug 4, 2026 | CVE Modified | CISA-ADP |
| Aug 4, 2026 | New CVE Received | [email protected] |