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Medium severity · published Feb 18, 2026
CVE-2026-2230
Booking Calendar <= 10.14.14 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary User Settings Modification
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
The Booking Calendar plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 10.14.14 via the handle_ajax_save function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, and booking permissions granted by an Administrator, to modify other users' plugin settings, such as booking calendar display options, which can disrupt the booking calendar functionality for the targeted user.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Booking Calendar · wpdevelop
through 10.14.14 · source: vendor
Affected product
BC
Booking Calendar
wpdevelop
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2230
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2230
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/booking/trunk/includes/save-user-meta/save-user-meta.php#L90
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3456856/
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/60f7df44-22f9-4a9e-a20c-4b8628674079?source=cve
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