CVE-2026-10032 · GHSA-72qq-p3r5-f7wq
@a2ui/web_core: `openUrl` permits `javascript:` URI execution via agent-supplied button actions
- Risk score
- 42/100
- CVSS
- 6.1 v3.1
- Exploit chance (30 days)
- 0.1%
- Published
- 4 Aug 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 t…
- Affected
- @a2ui/web_core (npm) >= 0.9.0, < 0.10.2
- Fix
- Upgrade @a2ui/web_core to 0.10.2 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.1 medium
- On your watchlist: npm
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| @a2ui/web_core | npm | >= 0.9.0, < 0.10.2 | 0.10.2 |
References
- https://github.com/advisories/GHSA-72qq-p3r5-f7wq
- https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq
- https://nvd.nist.gov/vuln/detail/CVE-2026-10032
- https://github.com/a2ui-project/a2ui/pull/1707
- https://github.com/a2ui-project/a2ui/commit/71573078c4168b2dc166bb847c3a85715dadc675
- https://github.com/advisories/GHSA-72qq-p3r5-f7wq
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.
Last activity 2 Oct 2026. Patch Forecast updates every hour.