WordPress Message Filter for Contact Form 7 plugin <= 1.6.3.9 - Cross Site Scripting (XSS) vulnerability

{
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  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-65438",
    "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3",
    "assignerShortName": "Patchstack",
    "dateUpdated": "2026-07-28T13:35:00.094Z",
    "dateReserved": "2026-07-22T08:52:41.029Z",
    "datePublished": "2026-07-27T22:44:01.949Z",
    "state": "PUBLISHED"
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        "dateUpdated": "2026-07-27T22:44:01.949Z"
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      "title": "WordPress Message Filter for Contact Form 7 plugin <= 1.6.3.9 - Cross Site Scripting (XSS) vulnerability",
      "descriptions": [
        {
          "lang": "en",
          "value": "Unauthenticated Cross Site Scripting (XSS) in Message Filter for Contact Form 7 <= 1.6.3.9 versions.",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "Unauthenticated Cross Site Scripting (XSS) in Message Filter for Contact Form 7 <= 1.6.3.9 versions."
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      "affected": [
        {
          "vendor": "Kofi Mokome",
          "product": "Message Filter for Contact Form 7",
          "collectionURL": "https://wordpress.org/plugins",
          "packageName": "cf7-message-filter",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "n/a",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "1.6.3.9"
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      "problemTypes": [
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          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
              "cweId": "CWE-79",
              "type": "CWE"
            }
          ]
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      ],
      "references": [
        {
          "url": "https://patchstack.com/database/wordpress/plugin/cf7-message-filter/vulnerability/wordpress-message-filter-for-contact-form-7-plugin-1-6-3-9-cross-site-scripting-xss-vulnerability?_s_id=cve",
          "tags": [
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      "impacts": [
        {
          "capecId": "CAPEC-591",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-591 Reflected XSS"
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "NONE",
            "userInteraction": "REQUIRED",
            "scope": "CHANGED",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "availabilityImpact": "LOW",
            "baseScore": 7.1,
            "baseSeverity": "HIGH"
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      "solutions": [
        {
          "lang": "en",
          "value": "Update the WordPress Message Filter for Contact Form 7 Plugin to the latest available version (at least 1.6.4.0).",
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              "value": "Update the WordPress Message Filter for Contact Form 7 Plugin to the latest available version (at least 1.6.4.0)."
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      "credits": [
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          "value": "dutafi | Patchstack Bug Bounty Program",
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          "dateUpdated": "2026-07-28T13:35:00.094Z"
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