Booking Calendar: known security problems
38 known security problems reported for this WordPress plugin, with the affected versions, the fix and what to do.
Updated
In short
There are 38 known security problems on this page. Each one has a fixed version. Updating to version 11.9 or newer covers every fixed problem listed here.
Based on public reports. Check the plugin’s changelog. Watchfox AI may be wrong.
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A stranger could see private information they should not see (up to and including 11.4.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 11.4.3
- Fixed in
- 11.5
- What to do
- If your site has an affected version, update Booking Calendar to version 11.5 or newer.
- Official ID
- CVE-2026-18496
- Report title
- Booking Calendar <= 11.4.3 - Unauthenticated Sensitive Information Exposure in 'WPBC_FLEXTIMELINE_NAV' AJAX Action
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (before 11.8)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 11.8
- Fixed in
- 11.8
- What to do
- If your site has an affected version, update Booking Calendar to version 11.8 or newer.
- Official ID
- CVE-2026-105193
- Report title
- Booking Calendar < 11.8 - Unauthenticated Information Exposure
- First reported
- Sources
- Wordfence, seen
Someone with an editor account on your site could use it to harm your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 10.15 up to and including 11.8.2
- Fixed in
- 11.8.3
- What to do
- If your site has an affected version, update Booking Calendar to version 11.8.3 or newer.
- Official ID
- CVE-2026-105195
- Report title
- Booking Calendar 10.15 - 11.8.2 - Authenticated (Editor+) Information Exposure
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 11.8.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 11.8.4
- Fixed in
- 11.9
- What to do
- If your site has an affected version, update Booking Calendar to version 11.9 or newer.
- Official ID
- CVE-2026-39601
- Report title
- Booking Calendar <= 11.8.4 - Unauthenticated Duplicate Slot Booking
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 11.8.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 11.8.3
- Fixed in
- 11.8.4
- What to do
- If your site has an affected version, update Booking Calendar to version 11.8.4 or newer.
- Official ID
- CVE-2026-93655
- Report title
- Booking Calendar <= 11.8.3 - Reflected Cross-Site Scripting via 'wpbc_auto_fill' Parameter
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 11.8.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 11.8.2
- Fixed in
- 11.8.3
- What to do
- If your site has an affected version, update Booking Calendar to version 11.8.3 or newer.
- Official ID
- CVE-2026-92561
- Report title
- Booking Calendar <= 11.8.2 - Reflected Cross-Site Scripting via 'options' Parameter
- First reported
- Sources
- Wordfence, seen
Someone with an editor account on your site could take over your site as an admin
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 11.8.2
- Fixed in
- 11.8.3
- What to do
- If your site has an affected version, update Booking Calendar to version 11.8.3 or newer.
- Official ID
- CVE-2026-92619
- Report title
- Booking Calendar <= 11.8.2 - Authenticated (Editor+) Privilege Escalation to 'data_name' Parameter
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 11.7
- Fixed in
- 11.8
- What to do
- If your site has an affected version, update Booking Calendar to version 11.8 or newer.
- Official ID
- CVE-2026-74002
- Report title
- Booking Calendar <= 11.7 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 11.4.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 11.4.2
- Fixed in
- 11.4.3
- What to do
- If your site has an affected version, update Booking Calendar to version 11.4.3 or newer.
- Official ID
- CVE-2026-59558
- Report title
- Booking Calendar <= 11.4.2 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Anyone with an account on your site, even a basic one could use it to harm your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.14
- Fixed in
- 10.14.15
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.15 or newer.
- Official ID
- CVE-2026-2230
- Report title
- Booking Calendar <= 10.14.14 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary User Settings Modification
- First reported
- Sources
- Wordfence, seen
Someone with an editor account on your site could read or change the data in your site’s database (up to and including 10.14.15)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.15
- Fixed in
- 10.14.16
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.16 or newer.
- Official ID
- CVE-2026-32358
- Report title
- Booking Calendar <= 10.14.15 - Authenticated (Editor+) SQL Injection
- First reported
- Sources
- Wordfence, seen
A stranger could do things on your site they should not be allowed to
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.13
- Fixed in
- 10.14.14
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.14 or newer.
- Official ID
- CVE-2026-1431
- Report title
- Booking Calendar <= 10.14.13 - Missing Authorization to Unauthenticated Booking Details Exposure
- First reported
- Sources
- Wordfence, seen
Someone could see private information they should not see
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.11
- Fixed in
- 10.14.12
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.12 or newer.
- Official ID
- CVE-2025-14982
- Report title
- Booking Calendar <= 10.14.11 - Missing Authorization to Sensitive Information Exposure
- First reported
- Sources
- Wordfence, seen
A stranger could see private information they should not see (up to and including 10.14.10)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.10
- Fixed in
- 10.14.11
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.11 or newer.
- Official ID
- CVE-2025-14146
- Report title
- Booking Calendar <= 10.14.10 - Unauthenticated Sensitive Information Exposure
- First reported
- Sources
- Wordfence, seen
A stranger could read or change the data in your site’s database (up to and including 10.14.8)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.8
- Fixed in
- 10.14.9
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.9 or newer.
- Official ID
- CVE-2025-14383
- Report title
- Booking Calendar <= 10.14.8 - Unauthenticated SQL Injection via dates_to_check
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins (up to and including 10.14.6)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.6
- Fixed in
- 10.14.7
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.7 or newer.
- Official ID
- CVE-2025-12804
- Report title
- Booking Calendar <= 10.14.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via bookingcalendar Shortcode
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins (up to and including 10.14.7)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.7
- Fixed in
- 10.14.8
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.8 or newer.
- Official ID
- CVE-2025-64381
- Report title
- Booking Calendar <= 10.14.7 - Authenticated (Contributor+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins (up to and including 10.14.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.14.1
- Fixed in
- 10.14.2
- What to do
- If your site has an affected version, update Booking Calendar to version 10.14.2 or newer.
- Official ID
- CVE-2025-9346
- Report title
- Booking Calendar <= 10.14.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins (up to and including 10.11.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.11.1
- Fixed in
- 10.11.2
- What to do
- If your site has an affected version, update Booking Calendar to version 10.11.2 or newer.
- Official ID
- CVE-2025-4669
- Report title
- Booking Calendar <= 10.11.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via wpbc Shortcode
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 10.10)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.10
- Fixed in
- 10.10.1
- What to do
- If your site has an affected version, update Booking Calendar to version 10.10.1 or newer.
- Official ID
- CVE-2024-13821
- Report title
- WP Booking Calendar <= 10.10 - Unauthenticated Post-Confirmation Booking Manipulation
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins (up to and including 10.9.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.9.2
- Fixed in
- 10.9.3
- What to do
- If your site has an affected version, update Booking Calendar to version 10.9.3 or newer.
- Official ID
- CVE-2024-13323
- Report title
- Booking Calendar <= 10.9.2 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting via 'booking' Shortcode
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 10.6.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.6.4
- Fixed in
- 10.6.5
- What to do
- If your site has an affected version, update Booking Calendar to version 10.6.5 or newer.
- Official ID
- CVE-2024-10893
- Report title
- WP Booking Calendar <= 10.6.4 - Authenticated (Admin+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone who already has an admin account could plant harmful code that runs for your visitors or admins
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.6.2
- Fixed in
- 10.6.3
- What to do
- If your site has an affected version, update Booking Calendar to version 10.6.3 or newer.
- Official ID
- CVE-2024-10027
- Report title
- WP Booking Calendar <= 10.6.2 - Authenticated (Administrator+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 10.6)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.6
- Fixed in
- 10.6.1
- What to do
- If your site has an affected version, update Booking Calendar to version 10.6.1 or newer.
- Official ID
- CVE-2024-9306
- Report title
- WP Booking Calendar <= 10.6 - Authenticated (Admin+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 10.5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.5
- Fixed in
- 10.5.1
- What to do
- If your site has an affected version, update Booking Calendar to version 10.5.1 or newer.
- Official ID
- CVE-2024-8274
- Report title
- WP Booking Calendar <= 10.5 - Reflected Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins (up to and including 10.2.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 10.2.1
- Fixed in
- 10.2.2
- What to do
- If your site has an affected version, update Booking Calendar to version 10.2.2 or newer.
- Official ID
- CVE-2024-6930
- Report title
- WP Booking Calendar <= 10.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via bookingform Shortcode
- First reported
- Sources
- Wordfence, seen
A stranger could read or change the data in your site’s database (up to and including 9.9)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 9.9
- Fixed in
- 9.9.1
- What to do
- If your site has an affected version, update Booking Calendar to version 9.9.1 or newer.
- Official ID
- CVE-2024-1207
- Report title
- Booking Calendar <= 9.9 - Unauthenticated SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins (before 9.7.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 9.7.4
- Fixed in
- 9.7.4
- What to do
- If your site has an affected version, update Booking Calendar to version 9.7.4 or newer.
- Official ID
- CVE-2023-51520
- Report title
- Booking Calendar <= 9.7.3.3 - Authenticated(Contributor+) Stored Cross-Site Scripting via shortcode
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 9.7.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 9.7.3
- Fixed in
- 9.7.3.1
- What to do
- If your site has an affected version, update Booking Calendar to version 9.7.3.1 or newer.
- Official ID
- CVE-2023-4620
- Report title
- Booking Calendar <= 9.7.3 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could read or change the data in your site’s database (up to and including 9.4.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 9.4.2
- Fixed in
- 9.4.3.1
- What to do
- If your site has an affected version, update Booking Calendar to version 9.4.3.1 or newer.
- Official ID
- CVE-2023-23991
- Report title
- Booking Calendar <= 9.4.2 - Authenticated (Admin+) SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 9.2.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 9.2.1
- Fixed in
- 9.2.2
- What to do
- If your site has an affected version, update Booking Calendar to version 9.2.2 or newer.
- Official ID
- CVE-2022-33177
- Report title
- Booking Calendar <= 9.2.1 - Cross-Site Request Forgery
- First reported
- Sources
- Wordfence, seen
Someone could in some setups, take over your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 9.1
- Fixed in
- 9.1.1
- What to do
- If your site has an affected version, update Booking Calendar to version 9.1.1 or newer.
- Official ID
- CVE-2022-1463
- Report title
- Booking Calendar <= 9.1 - PHP Object Injection via Shortcode
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 8.9.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 8.9.1
- Fixed in
- 8.9.2
- What to do
- If your site has an affected version, update Booking Calendar to version 8.9.2 or newer.
- Official ID
- CVE-2021-25040
- Report title
- Booking Calendar <= 8.9.1 - Reflected Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could read or change the data in your site’s database (up to and including 8.4.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 8.4.3
- Fixed in
- 8.4.4
- What to do
- If your site has an affected version, update Booking Calendar to version 8.4.4 or newer.
- Official ID
- CVE-2018-20556
- Report title
- Booking Calendar <= 8.4.3 - SQL injection
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (before 6.2.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 6.2.1
- Fixed in
- 6.2.1
- What to do
- If your site has an affected version, update Booking Calendar to version 6.2.1 or newer.
- Report title
- Booking Calendar <= 6.2 - Cross-Site Request Forgery leading to Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could read or change the data in your site’s database (before 6.2.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 6.2.1
- Fixed in
- 6.2.1
- What to do
- If your site has an affected version, update Booking Calendar to version 6.2.1 or newer.
- Report title
- Booking Calendar <= 6.2 - Cross-Site Request Forgery to SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone with an editor account on your site could read or change the data in your site’s database (before 6.2.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 6.2.1
- Fixed in
- 6.2.1
- What to do
- If your site has an affected version, update Booking Calendar to version 6.2.1 or newer.
- Report title
- Booking Calendar <= 6.2 - Authenticated (Editor+) SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (before 4.1.6)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 4.1.6
- Fixed in
- 4.1.6
- What to do
- If your site has an affected version, update Booking Calendar to version 4.1.6 or newer.
- Report title
- Booking Calendar < 4.1.6 - Cross-Site Request Forgery
- First reported
- Sources
- Wordfence, seen
Where this comes from
We collect these reports from public security sources and rewrite them in plain words. Each problem shows its sources and the date we first saw it. This page never says whether your own site is affected: only a check of your site’s versions can tell.
Get an email when your site is affected.
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