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FKIE_CVE-2026-10032

Vulnerability from fkie_nvd - Published: 2026-08-04 16:16 - Updated: 2026-08-06 15:41
Severity
6.1 (Medium) - 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
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.
References
cve-coordination@google.comhttps://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "cve-coordination@google.com"
    }
  ],
  "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."
    }
  ],
  "id": "CVE-2026-10032",
  "lastModified": "2026-08-06T15:41:27.197",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "UNREPORTED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "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/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cve-coordination@google.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-10032",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-04T17:42:13.437105Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-04T16:16:20.983",
  "references": [
    {
      "source": "cve-coordination@google.com",
      "url": "https://github.com/a2ui-project/a2ui/security/advisories/GHSA-72qq-p3r5-f7wq"
    }
  ],
  "sourceIdentifier": "cve-coordination@google.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "cve-coordination@google.com",
      "type": "Secondary"
    }
  ]
}



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