Meta pixel for WordPress: known security problems
3 known security problems reported for this WordPress plugin, with the affected versions, the fix and what to do.
Updated
In short
There are 3 known security problems on this page. Each one has a fixed version. Updating to version 5.2.2 or newer covers every fixed problem listed here.
Based on public reports. Check the plugin’s changelog. Watchfox AI may be wrong.
Get an email when your site is affected: install Watchfox AI (free)
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 5.2.1
- Fixed in
- 5.2.2
- What to do
- If your site has an affected version, update Meta pixel for WordPress to version 5.2.2 or newer.
- Official ID
- CVE-2026-66705
- Report title
- Meta pixel for WordPress <= 5.2.1 - Unauthenticated Stored Cross-Site Scripting
- 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 2.2.2
- Fixed in
- 3.0.0
- What to do
- If your site has an affected version, update Meta pixel for WordPress to version 3.0.0 or newer.
- Official ID
- CVE-2021-24217
- Report title
- Meta pixel for WordPress <= 2.2.2 - PHP Object Injection
- First reported
- Sources
- Wordfence, seen
Someone 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
- From 3.0.0 up to, but not including, 3.0.4
- Fixed in
- 3.0.4
- What to do
- If your site has an affected version, update Meta pixel for WordPress to version 3.0.4 or newer.
- Official ID
- CVE-2021-24218
- Report title
- Facebook for WordPress <= 3.0.3 - Cross-site Request Forgery to Stored Cross-site Scripting and Settings Deletion via wp_ajax_(save|delete)_fbe_settings
- 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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