FKIE_CVE-2026-96573

Vulnerability from fkie_nvd - Published: 2026-10-01 09:17 - Updated: 2026-10-01 15:17
Severity
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Summary
The Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via Booking Form Single-Line Field via Schedule Calendar List Renderer in all versions up to, and including, 1.5.97 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the 'list_readmore_numberofwords' Other Parameters setting to be configured with a positive integer value; the default value of 0 bypasses the decode-and-truncate branch entirely and is not exploitable through this sink.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/classes/cp-base-class.inc.php#L81
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1473
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1609
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1745
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/mv/js/jquery.calendar.js
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset?reponame=&old=3718725%40appointment-hour-booking&new=3718725%40appointment-hour-booking
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/3044e60f-b930-42db-ba5d-656e71b84226?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Appointment Hour Booking \u2013 Booking Calendar",
          "vendor": "codepeople",
          "versions": [
            {
              "lessThanOrEqual": "1.5.97",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Appointment Hour Booking \u2013 Booking Calendar plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via Booking Form Single-Line Field via Schedule Calendar List Renderer in all versions up to, and including, 1.5.97 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the \u0027list_readmore_numberofwords\u0027 Other Parameters setting to be configured with a positive integer value; the default value of 0 bypasses the decode-and-truncate branch entirely and is not exploitable through this sink."
    }
  ],
  "id": "CVE-2026-96573",
  "lastModified": "2026-10-01T15:17:37.320",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.7,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-96573",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-01T14:13:16.706277Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-01T09:17:10.647",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/classes/cp-base-class.inc.php#L81"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1473"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1609"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1745"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/mv/js/jquery.calendar.js"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3718725%40appointment-hour-booking\u0026new=3718725%40appointment-hour-booking"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3044e60f-b930-42db-ba5d-656e71b84226?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}



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