FKIE_CVE-2026-120350

Vulnerability from fkie_nvd - Published: 2026-11-10 12:17 - Updated: 2026-11-10 12:17
Severity
5.1 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Summary
The Vaadin Rich Text Editor exports a video embed without escaping its value, and then parses the resulting HTML into live DOM. A value crafted to break out of the href attribute therefore runs script in the viewer's browser. An attacker who can edit shared content pastes a video embed carrying the payload, the delta is stored, and the script runs when any user opens the page, including in read only mode. Only content persisted through asDelta() is affected. The default HTML value, set and read through setValue and getValue, is sanitized on the server with a safelist that has no iframe, so the embed does not survive that path. Vaadin 24 and older are not affected: they build the HTML value from the editor's own innerHTML, which the browser escapes. Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include: Product version Vaadin 25.0.0 - 25.0.13 Vaadin 25.1.0 - 25.1.13 Vaadin 25.2.0 - 25.2.12 Vaadin 25.3.0 - 25.3.4 Mitigation No fixed release on this line, upgrade to 25.2.13 or newer No fixed release on this line, upgrade to 25.2.13 or newer Upgrade to 25.2.13 Upgrade to 25.3.5
References
security@vaadin.comhttps://github.com/advisories/GHSA-v3m3-f69x-jf25
security@vaadin.comhttps://github.com/vaadin/web-components/pull/13272
security@vaadin.comhttps://vaadin.com/security/cve-2026-120350
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "com.vaadin:vaadin",
          "product": "vaadin",
          "repo": "https://github.com/vaadin/platform",
          "vendor": "vaadin",
          "versions": [
            {
              "lessThanOrEqual": "25.0.13",
              "status": "affected",
              "version": "25.0.0",
              "versionType": "maven"
            },
            {
              "lessThanOrEqual": "25.1.13",
              "status": "affected",
              "version": "25.1.0",
              "versionType": "maven"
            },
            {
              "lessThan": "25.2.13",
              "status": "affected",
              "version": "25.2.0",
              "versionType": "maven"
            },
            {
              "lessThan": "25.3.5",
              "status": "affected",
              "version": "25.3.0",
              "versionType": "maven"
            }
          ]
        },
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "com.vaadin:vaadin-core",
          "product": "vaadin-core",
          "repo": "https://github.com/vaadin/platform",
          "vendor": "vaadin",
          "versions": [
            {
              "lessThanOrEqual": "25.0.13",
              "status": "affected",
              "version": "25.0.0",
              "versionType": "maven"
            },
            {
              "lessThanOrEqual": "25.1.13",
              "status": "affected",
              "version": "25.1.0",
              "versionType": "maven"
            },
            {
              "lessThan": "25.2.13",
              "status": "affected",
              "version": "25.2.0",
              "versionType": "maven"
            },
            {
              "lessThan": "25.3.5",
              "status": "affected",
              "version": "25.3.0",
              "versionType": "maven"
            }
          ]
        },
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "com.vaadin:vaadin-rich-text-editor-flow",
          "product": "vaadin-rich-text-editor-flow",
          "repo": "https://github.com/vaadin/flow-components",
          "vendor": "vaadin",
          "versions": [
            {
              "lessThanOrEqual": "25.0.13",
              "status": "affected",
              "version": "25.0.0",
              "versionType": "maven"
            },
            {
              "lessThanOrEqual": "25.1.13",
              "status": "affected",
              "version": "25.1.0",
              "versionType": "maven"
            },
            {
              "lessThan": "25.2.13",
              "status": "affected",
              "version": "25.2.0",
              "versionType": "maven"
            },
            {
              "lessThan": "25.3.5",
              "status": "affected",
              "version": "25.3.0",
              "versionType": "maven"
            }
          ]
        },
        {
          "collectionURL": "https://registry.npmjs.org",
          "defaultStatus": "unaffected",
          "packageName": "@vaadin/rich-text-editor",
          "product": "rich-text-editor",
          "repo": "https://github.com/vaadin/web-components",
          "vendor": "vaadin",
          "versions": [
            {
              "lessThanOrEqual": "25.0.13",
              "status": "affected",
              "version": "25.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "25.1.14",
              "status": "affected",
              "version": "25.1.0",
              "versionType": "semver"
            },
            {
              "lessThan": "25.2.17",
              "status": "affected",
              "version": "25.2.0",
              "versionType": "semver"
            },
            {
              "lessThan": "25.3.5",
              "status": "affected",
              "version": "25.3.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@vaadin.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Vaadin Rich Text Editor exports a video embed without escaping its value, and then parses the resulting HTML into live DOM. A value crafted to break out of the href attribute therefore runs script in the viewer\u0027s browser. An attacker who can edit shared content pastes a video embed carrying the payload, the delta is stored, and the script runs when any user opens the page, including in read only mode.\n\nOnly content persisted through asDelta() is affected. The default HTML value, set and read through setValue and getValue, is sanitized on the server with a safelist that has no iframe, so the embed does not survive that path. Vaadin 24 and older are not affected: they build the HTML value from the editor\u0027s own innerHTML, which the browser escapes.\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 25.0.0 - 25.0.13\nVaadin 25.1.0 - 25.1.13\nVaadin 25.2.0 - 25.2.12\nVaadin 25.3.0 - 25.3.4\n\nMitigation\nNo fixed release on this line, upgrade to 25.2.13 or newer\nNo fixed release on this line, upgrade to 25.2.13 or newer\nUpgrade to 25.2.13\nUpgrade to 25.3.5"
    }
  ],
  "id": "CVE-2026-120350",
  "lastModified": "2026-11-10T12:17:17.170",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.1,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "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": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security@vaadin.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-11-10T12:17:17.050",
  "references": [
    {
      "source": "security@vaadin.com",
      "url": "https://github.com/advisories/GHSA-v3m3-f69x-jf25"
    },
    {
      "source": "security@vaadin.com",
      "url": "https://github.com/vaadin/web-components/pull/13272"
    },
    {
      "source": "security@vaadin.com",
      "url": "https://vaadin.com/security/cve-2026-120350"
    }
  ],
  "sourceIdentifier": "security@vaadin.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security@vaadin.com",
      "type": "Secondary"
    }
  ]
}



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