vulnerability · Tue 04 Aug 2026 · 16:16 UTC
CVE-2026-10032: The openUrl function in @a2ui/web_core passes an agent-controlled URL directly
Filed UTCSource GTH ↗
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.
Signals
as the pipeline stamped them- High
- Critical vulnerability — CVSS 9.3
- What to do
- Critical severity — schedule an urgent patch.
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-10032 | — | 0.13% | NVD ↗ |
Get the next one first.
Every dispatch goes to Telegram and RSS the moment it is published, and the whole wire is a keyless JSON API.
Check your stack
Paste what you run: the CVEs exploited in the wild against it, and who is cited as exploiting them, with the report.
Stack checkNo key. No signup.