{"id":"CVE-2026-10032","summary":"Arbitrary JavaScript Execution via openUrl in @a2ui/web_core","details":"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.","aliases":["GHSA-72qq-p3r5-f7wq"],"modified":"2026-11-06T10:46:29.818186936Z","published":"2026-08-04T15:36:45.199Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10032.json","unresolved_ranges":[{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandaloneSingleVersion","range":[{"introduced":"0.9.1-alpha.0"},{"last_affected":"0.9.1-alpha.0"},{"introduced":"0.9.1-alpha.1"},{"last_affected":"0.9.1-alpha.1"},{"introduced":"0.9.1-alpha.2"},{"last_affected":"0.9.1-alpha.2"},{"introduced":"0.9.1-alpha.3"},{"last_affected":"0.9.1-alpha.3"},{"introduced":"0.9.1-alpha.4"},{"last_affected":"0.9.1-alpha.4"},{"introduced":"0.9.1-alpha.5"},{"last_affected":"0.9.1-alpha.5"},{"introduced":"0.9.1"},{"last_affected":"0.9.1"},{"introduced":"0.9.2"},{"last_affected":"0.9.2"},{"introduced":"0.10.1"},{"last_affected":"0.10.1"}]}]}],"cna_assigner":"Google"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10032.json"},{"type":"ADVISORY","url":"https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10032"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/a2ui-project/a2ui","events":[{"introduced":"c68db100a9aeac9aa276ac226644b3b7f377717e"},{"last_affected":"9e8a9bac5f08cdb01e4f181d0aa9438ca2e5161b"}],"database_specific":{"extracted_events":[{"strategy":"StandaloneSingleVersion","range":[{"introduced":"0.9.0"},{"last_affected":"0.9.0"}],"source":"AFFECTED_FIELD"},{"source":"AFFECTED_FIELD","strategy":"StandaloneSingleVersion","range":[{"introduced":"0.10.0"},{"last_affected":"0.10.0"}]}]}}],"versions":["0.10.0","0.9.0","python/a2ui-core/v0.5.0","python/a2ui-agent-sdk/v0.10.0","python/a2ui-adk/v0.2.0","python/a2ui-a2a/v0.2.0","cli-v0.1.0","python/a2ui-core/v0.4.0","python/a2ui-agent-sdk/v0.9.0","python/a2ui-adk/v0.1.0","python/a2ui-a2a/v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10032.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U"}]}