The Events Calendar: known security problems
41 known security problems reported for this WordPress plugin, with the affected versions, the fix and what to do.
Updated
In short
There are 41 known security problems on this page. Each one has a fixed version. Updating to version 6.18.2 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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Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins (up to and including 6.18.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.18.1
- Fixed in
- 6.18.2
- What to do
- If your site has an affected version, update The Events Calendar to version 6.18.2 or newer.
- Official ID
- CVE-2026-110903
- Report title
- The Events Calendar <= 6.18.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger could in some setups, take over your site (up to and including 6.17.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.17.4
- Fixed in
- 6.17.4.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.4.1 or newer.
- Official ID
- CVE-2026-95606
- Report title
- The Events Calendar <= 6.17.4 - Unauthenticated PHP Object Injection
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 6.17.5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.17.5
- Fixed in
- 6.17.5.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.5.1 or newer.
- Official ID
- CVE-2026-97285
- Report title
- The Events Calendar <= 6.17.5 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (from 6.12.0 up to and including 6.17.5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 6.12.0 up to and including 6.17.5
- Fixed in
- 6.17.5.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.5.1 or newer.
- Official ID
- CVE-2026-84740
- Report title
- The Events Calendar 6.12.0 - 6.17.5 - Unauthenticated Arbitrary Shortcode Execution
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (from 6.15.0 up to and including 6.17.4.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 6.15.0 up to and including 6.17.4.1
- Fixed in
- 6.17.5
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.5 or newer.
- Official ID
- CVE-2026-84742
- Report title
- The Events Calendar 6.15.0 - 6.17.4.1 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (from 6.15.16.1 up to and including 6.17.4.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 6.15.16.1 up to and including 6.17.4.1
- Fixed in
- 6.17.5
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.5 or newer.
- Official ID
- CVE-2026-84743
- Report title
- The Events Calendar 6.15.16.1 - 6.17.4.1 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (from 4.5 up to and including 6.17.4.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 4.5 up to and including 6.17.4.1
- Fixed in
- 6.17.5
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.5 or newer.
- Official ID
- CVE-2026-84741
- Report title
- The Events Calendar 4.5 - 6.17.4.1 - Unauthenticated Information Exposure
- First reported
- Sources
- Wordfence, seen
A stranger could run their own code on your site and take it over (up to and including 6.17.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.17.3
- Fixed in
- 6.17.3.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.3.1 or newer.
- Official ID
- CVE-2026-78159
- Report title
- The Events Calendar <= 6.17.3 - Unauthenticated Code Injection to Remote Code Execution via Widget 'classes' Map Callable Invocation
- First reported
- Sources
- Wordfence, seen
A stranger could run their own code on your site and take it over (up to and including 6.17.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.17.4
- Fixed in
- 6.17.4.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.4.1 or newer.
- Official ID
- CVE-2026-78006
- Report title
- The Events Calendar <= 6.17.4 - Unauthenticated PHP Object Injection to Remote Code Execution
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could use it to harm your site (before 6.17.3.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 6.17.3.1
- Fixed in
- 6.17.3.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.3.1 or newer.
- Official ID
- CVE-2026-84745
- Report title
- The Events Calendar < 6.17.3.1 - Authenticated (Contributor+) Information Exposure
- First reported
- Sources
- Wordfence, seen
A stranger could in some setups, take over your site (up to and including 6.17.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.17.2
- Fixed in
- 6.17.3
- What to do
- If your site has an affected version, update The Events Calendar to version 6.17.3 or newer.
- Official ID
- CVE-2026-78265
- Report title
- The Events Calendar <= 6.17.2 - Unauthenticated PHP Object Injection
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 6.16.5.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.16.5.0
- Fixed in
- 6.16.5.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.16.5.1 or newer.
- Official ID
- CVE-2026-13390
- Report title
- The Events Calendar <= 6.16.5.0 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
A stranger could read or change the data in your site’s database (from 6.15.12 up to and including 6.16.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 6.15.12 up to and including 6.16.2
- Fixed in
- 6.16.3
- What to do
- If your site has an affected version, update The Events Calendar to version 6.16.3 or newer.
- Official ID
- CVE-2026-49772
- Report title
- The Events Calendar 6.15.12-6.16.2 - Unauthenticated SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone with an author account on your site could read or delete private files on your server
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.15.17
- Fixed in
- 6.15.17.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.17.1 or newer.
- Official ID
- CVE-2026-3585
- Report title
- The Events Calendar <= 6.15.17 - Authenticated (Author+) Arbitrary File Read via ajax_create_import
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could use it to harm your site (up to and including 6.15.16)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.15.16
- Fixed in
- 6.15.16.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.16.1 or newer.
- Official ID
- CVE-2026-2694
- Report title
- The Events Calendar <= 6.15.16 - Improper Authorization to Authenticated (Contributor+) Event/Organizer/Venue Update/Trash via REST API
- First reported
- Sources
- Wordfence, seen
Anyone with an account on your site, even a basic one could do things on your site they should not be allowed to (up to and including 6.15.13)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.15.13
- Fixed in
- 6.15.13.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.13.1 or newer.
- Official ID
- CVE-2025-15043
- Report title
- The Events Calendar <= 6.15.13 - Missing Authorization to Authenticated (Subscriber+) Data Migration Control
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 6.15.12.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.15.12.2
- Fixed in
- 6.15.13
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.13 or newer.
- Official ID
- CVE-2025-69352
- Report title
- The Events Calendar <= 6.15.12.2 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
A stranger could see private information they should not see (up to and including 6.15.9)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.15.9
- Fixed in
- 6.15.10
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.10 or newer.
- Official ID
- CVE-2025-12192
- Report title
- The Events Calendar <= 6.15.9 - Sysinfo Key Incorrect Comparison to Unauthenticated Sensitive Information Exposure
- First reported
- Sources
- Wordfence, seen
A stranger could read or change the data in your site’s database (from 6.15.1.1 up to and including 6.15.9)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 6.15.1.1 up to and including 6.15.9
- Fixed in
- 6.15.10
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.10 or newer.
- Official ID
- CVE-2025-12197
- Report title
- The Events Calendar 6.15.1.1 - 6.15.9 - Unauthenticated SQL Injection via s
- First reported
- Sources
- Wordfence, seen
Anyone with an account on your site, even a basic one could do things on your site they should not be allowed to (up to and including 6.15.9)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.15.9
- Fixed in
- 6.15.10
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.10 or newer.
- Official ID
- CVE-2025-12175
- Report title
- The Events Calendar <= 6.15.9 - Missing Authorization to Authenticated (Subscriber+) Draft Event Title/QR Code Exposure
- First reported
- Sources
- Wordfence, seen
A stranger could do things on your site they should not be allowed to (up to and including 6.15.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.15.2
- Fixed in
- 6.15.3
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.3 or newer.
- Official ID
- CVE-2025-9808
- Report title
- The Events Calendar <= 6.15.2 - Missing Authorization to Unauthenticated Password-Protected Information Disclosure
- First reported
- Sources
- Wordfence, seen
A stranger could read or change the data in your site’s database (up to and including 6.15.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.15.1
- Fixed in
- 6.15.1.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.15.1.1 or newer.
- Official ID
- CVE-2025-9807
- Report title
- The Events Calendar <= 6.15.1 - 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 (up to and including 6.13.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.13.2
- Fixed in
- 6.13.2.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.13.2.1 or newer.
- Official ID
- CVE-2025-5144
- Report title
- The Events Calendar <= 6.13.2 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 6.11.2.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.11.2.1
- Fixed in
- 6.12.0
- What to do
- If your site has an affected version, update The Events Calendar to version 6.12.0 or newer.
- Official ID
- CVE-2025-48246
- Report title
- The Events Calendar <= 6.11.2.1 - Missing Authorization
- 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 6.9.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.9.0
- Fixed in
- 6.9.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.9.1 or newer.
- Official ID
- CVE-2024-12118
- Report title
- The Events Calendar <= 6.9.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 6.7.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.7.0
- Fixed in
- 6.7.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.7.1 or newer.
- Official ID
- CVE-2025-24537
- Report title
- The Events Calendar <= 6.7.0 - Cross-Site Request Forgery
- First reported
- Sources
- Wordfence, seen
A stranger could do things on your site they should not be allowed to (up to and including 6.8.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.8.2
- Fixed in
- 6.8.2.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.8.2.1 or newer.
- Official ID
- CVE-2024-5333
- Report title
- The Events Calendar <= 6.8.2 - Missing Authorization to Unauthenticated Password Protected Event Disclosure
- First reported
- Sources
- Wordfence, seen
A stranger could read or change the data in your site’s database (up to and including 6.6.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.6.4
- Fixed in
- 6.6.4.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.6.4.1 or newer.
- Official ID
- CVE-2024-8275
- Report title
- The Events Calendar <= 6.6.4 - Unauthenticated SQL Injection
- 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 6.6.3
- Fixed in
- 6.6.4
- What to do
- If your site has an affected version, update The Events Calendar to version 6.6.4 or newer.
- Official ID
- CVE-2024-8493
- Report title
- The Events Calendar <= 6.6.3 - Authenticated (Administrator+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger 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 6.6.3
- Fixed in
- 6.6.4
- What to do
- If your site has an affected version, update The Events Calendar to version 6.6.4 or newer.
- Official ID
- CVE-2024-6931
- Report title
- The Events Calendar <= 6.6.3 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 6.5.1.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.5.1.4
- Fixed in
- 6.5.1.5
- What to do
- If your site has an affected version, update The Events Calendar to version 6.5.1.5 or newer.
- Official ID
- CVE-2024-37518
- Report title
- The Events Calendar <= 6.5.1.4 - Cross-Site Request Forgery via action_restore_events
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site 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 6.4.0
- Fixed in
- 6.4.0.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.4.0.1 or newer.
- Official ID
- CVE-2024-1295
- Report title
- The Events Calendar Free & Pro <= 6.4.0 - Missing Authorization to Authenticated (Contributor+) Arbitrary Events Access
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 6.4.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.4.0
- Fixed in
- 6.4.0.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.4.0.1 or newer.
- Official ID
- CVE-2024-4180
- Report title
- The Events Calendar <= 6.4.0 - Reflected Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 6.3.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.3.0
- Fixed in
- 6.3.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.3.1 or newer.
- Official ID
- CVE-2024-31433
- Report title
- The Events Calendar <= 6.3.0 - Cross-Site Request Forgery to Notice Dismissal
- First reported
- Sources
- Wordfence, seen
A stranger could see private information they should not see (up to and including 6.2.8.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.2.8.2
- Fixed in
- 6.2.9
- What to do
- If your site has an affected version, update The Events Calendar to version 6.2.9 or newer.
- Official ID
- CVE-2023-6557
- Report title
- The Events Calendar <= 6.2.8.2 - Unauthenticated Sensitive Information Exposure
- First reported
- Sources
- Wordfence, seen
Someone 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
- Before 6.2.8.1
- Fixed in
- 6.2.8.1
- What to do
- If your site has an affected version, update The Events Calendar to version 6.2.8.1 or newer.
- Official ID
- CVE-2023-6203
- Report title
- The Events Calendar <= 6.2.8 - Information Disclosure
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 6.1.2.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.1.2.2
- Fixed in
- 6.1.3
- What to do
- If your site has an affected version, update The Events Calendar to version 6.1.3 or newer.
- Official ID
- CVE-2023-35777
- Report title
- The Events Calendar <= 6.1.2.2 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (from 4.9.0 up to and including 5.16.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 4.9.0 up to and including 5.16.4
- Fixed in
- 5.16.4.1
- What to do
- If your site has an affected version, update The Events Calendar to version 5.16.4.1 or newer.
- Official ID
- CVE-2023-33999
- Report title
- Freemius SDK <= 2.5.9 - Reflected Cross-Site Scripting via fs_request_get
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (before 5.14.0.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 5.14.0.4
- Fixed in
- 5.14.0.4
- What to do
- If your site has an affected version, update The Events Calendar to version 5.14.0.4 or newer.
- Official ID
- CVE-2022-4974
- Report title
- Freemius SDK <= 2.4.2 - Missing Authorization Checks
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (before 4.8.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 4.8.2
- Fixed in
- 4.8.2
- What to do
- If your site has an affected version, update The Events Calendar to version 4.8.2 or newer.
- Official ID
- CVE-2019-15109
- Report title
- The Events Calendar <= 4.8.1 - Cross-Site Scripting via tribe_paged Parameter
- First reported
- Sources
- Wordfence, seen
Someone could send your visitors from your site to a harmful site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 4.1.1
- Fixed in
- 4.1.1.1
- What to do
- If your site has an affected version, update The Events Calendar to version 4.1.1.1 or newer.
- Report title
- The Events Calendar < 4.1.1.1 - Open Redirect
- 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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