CVE-2026-6810
Booking Calendar Contact Form <= 1.2.63 - Authenticated (Subscriber+) Insecure Direct Object Reference to Calendar Takeover
Description
The Booking Calendar Contact Form plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.2.63 via the dex_bccf_admin_int_calendar_list.inc.php file due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to takeover other user's calendars and view user data associated with the calendar.
INFO
Published Date :
April 24, 2026, 6:16 a.m.
Last Modified :
April 24, 2026, 6:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-6810
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update the Booking Calendar Contact Form plugin to the latest version.
- Apply vendor patches or updates when available.
- Validate user permissions before accessing calendar data.
- Restrict access to sensitive calendar information.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-6810.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-6810 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-6810
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-6810 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-6810 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Apr. 24, 2026
Action Type Old Value New Value Added Description The Booking Calendar Contact Form plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.2.63 via the dex_bccf_admin_int_calendar_list.inc.php file due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to takeover other user's calendars and view user data associated with the calendar. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-639 Added Reference https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/tags/1.2.63/dex_bccf.php#L608 Added Reference https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/tags/1.2.63/dex_bccf_admin_int_calendar_list.inc.php#L38 Added Reference https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/tags/1.2.63/dex_bccf_admin_int_calendar_list.inc.php#L71 Added Reference https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/trunk/dex_bccf.php#L608 Added Reference https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/trunk/dex_bccf_admin_int_calendar_list.inc.php#L38 Added Reference https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/trunk/dex_bccf_admin_int_calendar_list.inc.php#L71 Added Reference https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3512197%40booking-calendar-contact-form&new=3512197%40booking-calendar-contact-form&sfp_email=&sfph_mail= Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/a3977d10-239d-4b83-ab0c-ad165485498d?source=cve