Vulnerability-Lookup

GHSA-JV6X-X2JH-JFMR

Vulnerability from github – Published: 2026-09-25 09:31 – Updated: 2026-09-25 09:31

Details

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Authorization Bypass via PHP Type Juggling in all versions up to, and including, 28.2. This is due to the postValidateCustomer() function using a loose PHP inequality operator (!=) to compare the session-stored one-time verification code against the attacker-supplied verification_code parameter — a flaw that is further exposed by the booking AJAX controller registering all its methods as wp_ajax_nopriv_ handlers and unconditionally overriding csrfTokenValid() to return true, leaving the endpoint both unauthenticated and CSRF-unprotected. This makes it possible for unauthenticated attackers to bypass the phone/email ownership verification step and overwrite the name, email, phone, and address fields of any arbitrary existing Bookly customer record, redirecting that customer's booking notifications to attacker-controlled contact details. The bypass is achievable because the json_data input channel decodes input via json_decode(), which preserves real PHP types and causes the wp_kses filter to leave non-string values such as the JSON boolean true untouched; submitting true as the verification_code satisfies the loose comparison against the session's non-zero integer code (generated by mt_rand(100000, 999999)), causing true != <non-zero int> to evaluate as false and the guard to be bypassed.

Severity

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-92799"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-285"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T07:16:55Z",
    "severity": "MODERATE"
  },
  "details": "The Online Scheduling and Appointment Booking System \u2013 Bookly plugin for WordPress is vulnerable to Authorization Bypass via PHP Type Juggling in all versions up to, and including, 28.2. This is due to the `postValidateCustomer()` function using a loose PHP inequality operator (`!=`) to compare the session-stored one-time verification code against the attacker-supplied `verification_code` parameter \u2014 a flaw that is further exposed by the booking AJAX controller registering all its methods as `wp_ajax_nopriv_` handlers and unconditionally overriding `csrfTokenValid()` to return true, leaving the endpoint both unauthenticated and CSRF-unprotected. This makes it possible for unauthenticated attackers to bypass the phone/email ownership verification step and overwrite the name, email, phone, and address fields of any arbitrary existing Bookly customer record, redirecting that customer\u0027s booking notifications to attacker-controlled contact details. The bypass is achievable because the `json_data` input channel decodes input via `json_decode()`, which preserves real PHP types and causes the `wp_kses` filter to leave non-string values such as the JSON boolean `true` untouched; submitting `true` as the `verification_code` satisfies the loose comparison against the session\u0027s non-zero integer code (generated by `mt_rand(100000, 999999)`), causing `true != \u003cnon-zero int\u003e` to evaluate as `false` and the guard to be bypassed.",
  "id": "GHSA-jv6x-x2jh-jfmr",
  "modified": "2026-09-25T09:31:06Z",
  "published": "2026-09-25T09:31:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92799"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/booking/Ajax.php#L1447"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/booking/Ajax.php#L15"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/booking/Ajax.php#L785"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/booking/Ajax.php#L903"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/lib/UserBookingData.php#L638"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/lib/Validator.php#L276"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/lib/base/Component.php#L182"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3707284%40bookly-responsive-appointment-booking-tool\u0026new=3707284%40bookly-responsive-appointment-booking-tool"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d24fa600-7698-4081-92f5-e11606928886?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-92799 (GCVE-0-2026-92799)

Vulnerability from cvelistv5 – Published: 2026-09-25 06:39 – Updated: 2026-09-25 10:37

Title

Online Scheduling and Appointment Booking System <= 28.2 - Unauthenticated Authorization Bypass via PHP Type Juggling via 'verification_code' Parameter Type Juggling via json_data

Summary

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Authorization Bypass via PHP Type Juggling in all versions up to, and including, 28.2. This is due to the `postValidateCustomer()` function using a loose PHP inequality operator (`!=`) to compare the session-stored one-time verification code against the attacker-supplied `verification_code` parameter — a flaw that is further exposed by the booking AJAX controller registering all its methods as `wp_ajax_nopriv_` handlers and unconditionally overriding `csrfTokenValid()` to return true, leaving the endpoint both unauthenticated and CSRF-unprotected. This makes it possible for unauthenticated attackers to bypass the phone/email ownership verification step and overwrite the name, email, phone, and address fields of any arbitrary existing Bookly customer record, redirecting that customer's booking notifications to attacker-controlled contact details. The bypass is achievable because the `json_data` input channel decodes input via `json_decode()`, which preserves real PHP types and causes the `wp_kses` filter to leave non-string values such as the JSON boolean `true` untouched; submitting `true` as the `verification_code` satisfies the loose comparison against the session's non-zero integer code (generated by `mt_rand(100000, 999999)`), causing `true != <non-zero int>` to evaluate as `false` and the guard to be bypassed.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-25 10:35 UTC

CWE

CWE-285 - Improper Authorization

Assigner

Wordfence mitre root

References

9 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/bookly…
https://plugins.trac.wordpress.org/browser/bookly…
https://plugins.trac.wordpress.org/browser/bookly…
https://plugins.trac.wordpress.org/browser/bookly…
https://plugins.trac.wordpress.org/browser/bookly…
https://plugins.trac.wordpress.org/browser/bookly…
https://plugins.trac.wordpress.org/browser/bookly…
https://plugins.trac.wordpress.org/changeset?repo…

Impacted products

1 product

Vendor	Product	Version
ladela	Online Scheduling and Appointment Booking System – Bookly	Affected: 0 , ≤ 28.2 (semver)

Credits

crow

Show details on NVD website

JSON

To clipboard

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                  },
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                    "Technical Impact": "partial"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-09-25T10:35:41.040639Z",
                "version": "2.0.3"
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      }
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    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Online Scheduling and Appointment Booking System \u2013 Bookly",
          "vendor": "ladela",
          "versions": [
            {
              "lessThanOrEqual": "28.2",
              "status": "affected",
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          "value": "crow"
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        {
          "lang": "en",
          "value": "The Online Scheduling and Appointment Booking System \u2013 Bookly plugin for WordPress is vulnerable to Authorization Bypass via PHP Type Juggling in all versions up to, and including, 28.2. This is due to the `postValidateCustomer()` function using a loose PHP inequality operator (`!=`) to compare the session-stored one-time verification code against the attacker-supplied `verification_code` parameter \u2014 a flaw that is further exposed by the booking AJAX controller registering all its methods as `wp_ajax_nopriv_` handlers and unconditionally overriding `csrfTokenValid()` to return true, leaving the endpoint both unauthenticated and CSRF-unprotected. This makes it possible for unauthenticated attackers to bypass the phone/email ownership verification step and overwrite the name, email, phone, and address fields of any arbitrary existing Bookly customer record, redirecting that customer\u0027s booking notifications to attacker-controlled contact details. The bypass is achievable because the `json_data` input channel decodes input via `json_decode()`, which preserves real PHP types and causes the `wp_kses` filter to leave non-string values such as the JSON boolean `true` untouched; submitting `true` as the `verification_code` satisfies the loose comparison against the session\u0027s non-zero integer code (generated by `mt_rand(100000, 999999)`), causing `true != \u003cnon-zero int\u003e` to evaluate as `false` and the guard to be bypassed."
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              "cweId": "CWE-285",
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          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/booking/Ajax.php#L15"
        },
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          "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3707284%40bookly-responsive-appointment-booking-tool\u0026new=3707284%40bookly-responsive-appointment-booking-tool"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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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GHSA-JV6X-X2JH-JFMR

CVE-2026-92799 (GCVE-0-2026-92799)

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