{"items":[{"id":"NVI-00013201","kind":"vulnerability","title":"@a2ui/web_core: `openUrl` permits `javascript:` URI execution via agent-supplied button actions","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-72qq-p3r5-f7wq","CVE-2026-10032"],"plain_summary":"GitHub lists this reviewed advisory for @a2ui/web_core. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-8d4d21899676e7e7963dc5ee4d30605a"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-02T22:55:50.000Z","value":"9.3 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-8d4d21899676e7e7963dc5ee4d30605a"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-8d4d21899676e7e7963dc5ee4d30605a","url":"https://github.com/advisories/GHSA-72qq-p3r5-f7wq","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-72qq-p3r5-f7wq","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:40:00.567Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-8d4d21899676e7e7963dc5ee4d30605a"],"technology":"@a2ui/web_core","known_exclusions":[],"conditions_summary":"### Summary\n\nThe `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. No non-default configuration is required; the Basic Catalog is enabled by default.\n\n### Details\n\nThe vulnerability exists in the `openUrl` function implementation within the Basic Catalog of `@a2ui/web_core` (commit `23a003248abbf59da6c376ea64ace91d82d209ff`).\n\n**Sink** — `renderers/web_core/src/v0_9/basic_catalog/functions/basic_functions.ts:428-430`:\n\n```ts\nexport const OpenUrlImplementation = createFunctionImplementation(OpenUrlApi, args => {\n  if (args.url && typeof window !== 'undefined' && window.open) {\n    window.open(args.url, '_blank');\n  }\n});\n```\n\n`window.open` is called unconditionally with the agent-supplied `args.url` value. No scheme allowlist or blocklist is applied.\n\n**Insufficient schema validation** — `renderers/web_core/src/v0_9/basic_catalog/fun","public_affected_ranges":[">= 0.9.0, < 0.10.2"]}],"null_published_at":"2026-11-01T07:29:12.929Z","source_updated_at":"2026-10-02T22:55:50.000Z","source_disclosed_at":"2026-10-02T22:55:49.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T01:40:00.567Z"}],"next_cursor":null,"snapshot_revision":"42594"}