CVE-2026-10032 (GCVE-0-2026-10032)
Vulnerability from cvelistv5 – Published: 2026-08-04 15:36 – Updated: 2026-08-04 17:43
VLAI
EPSS
VEX
Title
Arbitrary JavaScript Execution via openUrl in @a2ui/web_core
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 17:42 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| @a2ui/web_core |
Affected:
0.9.0
Affected: 0.9.1-alpha.0 Affected: 0.9.1-alpha.1 Affected: 0.9.1-alpha.2 Affected: 0.9.1-alpha.3 Affected: 0.9.1-alpha.4 Affected: 0.9.1-alpha.5 Affected: 0.9.1 Affected: 0.9.2 Affected: 0.10.0 Affected: 0.10.1 |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-10032",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-04T17:42:13.437105Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T17:43:20.898Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "@a2ui/web_core",
"vendor": "Google",
"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"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"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\u0027s functionCall action. When the user clicks the rendered button, arbitrary JavaScript executes in the victim application\u0027s browser origin, constituting a stored/reflected XSS with Critical severity. No non-default configuration is required; the Basic Catalog is enabled by default."
}
],
"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\u0027s functionCall action. When the user clicks the rendered button, arbitrary JavaScript executes in the victim application\u0027s browser origin, constituting a stored/reflected XSS with Critical severity. No non-default configuration is required; the Basic Catalog is enabled by default."
}
],
"impacts": [
{
"capecId": "CAPEC-244",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-244 Embedded Injection"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"exploitMaturity": "UNREPORTED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"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",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T15:36:45.199Z",
"orgId": "14ed7db2-1595-443d-9d34-6215bf890778",
"shortName": "Google"
},
"references": [
{
"url": "https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Arbitrary JavaScript Execution via openUrl in @a2ui/web_core",
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
"assignerShortName": "Google",
"cveId": "CVE-2026-10032",
"datePublished": "2026-08-04T15:36:45.199Z",
"dateReserved": "2026-05-28T18:45:17.761Z",
"dateUpdated": "2026-08-04T17:43:20.898Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-10032",
"date": "2026-09-16",
"epss": "0.00197",
"percentile": "0.09634"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-10032\",\"sourceIdentifier\":\"cve-coordination@google.com\",\"published\":\"2026-08-04T16:16:20.983\",\"lastModified\":\"2026-08-06T15:41:27.197\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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\u0027s functionCall action. When the user clicks the rendered button, arbitrary JavaScript executes in the victim application\u0027s browser origin, constituting a stored/reflected XSS with Critical severity. No non-default configuration is required; the Basic Catalog is enabled by default.\"}],\"affected\":[{\"source\":\"cve-coordination@google.com\",\"affectedData\":[{\"vendor\":\"Google\",\"product\":\"@a2ui/web_core\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"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\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cve-coordination@google.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"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/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\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"PASSIVE\",\"vulnConfidentialityImpact\":\"HIGH\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"LOW\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"UNREPORTED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-04T17:42:13.437105Z\",\"id\":\"CVE-2026-10032\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"cve-coordination@google.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"references\":[{\"url\":\"https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq\",\"source\":\"cve-coordination@google.com\"}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-10032\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-04T17:42:13.437105Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-04T17:42:44.203Z\"}}], \"cna\": {\"title\": \"Arbitrary JavaScript Execution via openUrl in @a2ui/web_core\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"impacts\": [{\"capecId\": \"CAPEC-244\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-244 Embedded Injection\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 6.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"valueDensity\": \"NOT_DEFINED\", \"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\", \"exploitMaturity\": \"UNREPORTED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"PASSIVE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"LOW\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"LOW\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"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\"}], \"references\": [{\"url\": \"https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq\"}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.2\"}, \"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\u0027s functionCall action. When the user clicks the rendered button, arbitrary JavaScript executes in the victim application\u0027s 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\", \"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\u0027s functionCall action. When the user clicks the rendered button, arbitrary JavaScript executes in the victim application\u0027s browser origin, constituting a stored/reflected XSS with Critical severity. No non-default configuration is required; the Basic Catalog is enabled by default.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"shortName\": \"Google\", \"dateUpdated\": \"2026-08-04T15:36:45.199Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-10032\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-04T17:43:20.898Z\", \"dateReserved\": \"2026-05-28T18:45:17.761Z\", \"assignerOrgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"datePublished\": \"2026-08-04T15:36:45.199Z\", \"assignerShortName\": \"Google\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…