{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-10032", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "state": "PUBLISHED", "assignerShortName": "Google", "dateReserved": "2026-05-28T18:45:17.761Z", "datePublished": "2026-08-04T15:36:45.199Z", "dateUpdated": "2026-08-04T17:43:20.898Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2026-08-04T15:36:45.199Z"}, "title": "Arbitrary JavaScript Execution via openUrl in @a2ui/web_core", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-244", "descriptions": [{"lang": "en", "value": "CAPEC-244 Embedded Injection"}]}], "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"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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."}]}], "references": [{"url": "https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6.1, "vectorString": "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"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-04T17:42:13.437105Z", "id": "CVE-2026-10032", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-04T17:43:20.898Z"}}]}}