CVE-2026-10032
Arbitrary JavaScript Execution via openUrl in @a2ui/web_core
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.
INFO
Published Date :
Aug. 4, 2026, 4:16 p.m.
Last Modified :
Aug. 4, 2026, 7:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-10032
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | MEDIUM | 14ed7db2-1595-443d-9d34-6215bf890778 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Validate URI schemes before opening URLs.
- Avoid using user-controlled input in window.open().
- Update the @a2ui/web_core library.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-10032.
| URL | Resource |
|---|---|
| https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-10032 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-10032
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-10032 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-10032 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 04, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-10032', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-04T17:42:13.437105Z'} -
New CVE Received by [email protected]
Aug. 04, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Google', 'product': '@a2ui/web_core', 'versions': [{'status': 'affected', 'version': '0.9.0'}, {'status': 'affected', 'version': '0.9.1-alpha.0'}, {'status': 'affected', 'version': '0.9.1-alpha.1'}, {'status': 'affected', 'version': '0.9.1-alpha.2'}, {'status': 'affected', 'version': '0.9.1-alpha.3'}, {'status': 'affected', 'version': '0.9.1-alpha.4'}, {'status': 'affected', 'version': '0.9.1-alpha.5'}, {'status': 'affected', 'version': '0.9.1'}, {'status': 'affected', 'version': '0.9.2'}, {'status': 'affected', 'version': '0.10.0'}, {'status': 'affected', 'version': '0.10.1'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-79 Added Reference https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq