GHSA-XFX8-39W8-9G2H

Vulnerability from github – Published: 2026-07-10 09:31 – Updated: 2026-07-10 09:31
VLAI
Details

The Easy Appointments plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.12.27. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to cancel all upcoming appointments site-wide by marking every future appointment stored by the plugin as abandoned. The nonce required to authenticate the cancellation request is printed on the Appointments admin page, which is itself gated only by the edit_posts capability that Authors possess, making the nonce readily accessible to low-privileged users.

Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-11992"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-10T09:16:52Z",
    "severity": "MODERATE"
  },
  "details": "The Easy Appointments plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.12.27. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to cancel all upcoming appointments site-wide by marking every future appointment stored by the plugin as abandoned. The nonce required to authenticate the cancellation request is printed on the Appointments admin page, which is itself gated only by the edit_posts capability that Authors possess, making the nonce readily accessible to low-privileged users.",
  "id": "GHSA-xfx8-39w8-9g2h",
  "modified": "2026-07-10T09:31:38Z",
  "published": "2026-07-10T09:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11992"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/easy-appointments/tags/3.12.24.1/src/ajax.php#L180"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/easy-appointments/tags/3.12.24.1/src/ajax.php#L563"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/easy-appointments/tags/3.12.24.1/src/ajax.php#L619"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/easy-appointments/tags/3.12.24.1/src/templates/appointments.tpl.php#L302"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/easy-appointments/tags/3.12.25/src/ajax.php#L180"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/easy-appointments/tags/3.12.25/src/ajax.php#L563"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/easy-appointments/tags/3.12.25/src/ajax.php#L619"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/easy-appointments/tags/3.12.25/src/templates/appointments.tpl.php#L302"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/eea33d0b-2547-4c51-8c4c-d178d6c8502d?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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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

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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.


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