MW WP Form: known security problems
14 known security problems reported for this WordPress plugin, with the affected versions, the fix and what to do.
Updated
In short
There are 14 known security problems on this page. Each one has a fixed version. Updating to version 5.1.8 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
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.1.7
- Fixed in
- 5.1.8
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.8 or newer.
- Official ID
- CVE-2026-92086
- Report title
- MW WP Form <= 5.1.7 - Unauthenticated Sensitive Information Exposure in 'post_id' Parameter
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 5.1.7)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.1.7
- Fixed in
- 5.1.8
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.8 or newer.
- Official ID
- CVE-2026-96567
- Report title
- MW WP Form <= 5.1.7 - Unauthenticated Stored Cross-Site Scripting via 'post_id' Parameter (via stored form-submitted post meta)
- First reported
- Sources
- Wordfence, seen
Someone with an editor account on your site could plant harmful code that runs for your visitors or admins (before 5.1.6)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 5.1.6
- Fixed in
- 5.1.6
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.6 or newer.
- Official ID
- CVE-2026-78364
- Report title
- MW WP Form < 5.1.6 - Authenticated (Editor+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (before 5.1.5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 5.1.5
- Fixed in
- 5.1.5
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.5 or newer.
- Official ID
- CVE-2026-78363
- Report title
- MW WP Form < 5.1.5 - Unauthenticated Arbitrary Shortcode Execution
- First reported
- Sources
- Wordfence, seen
Someone with an editor account on your site could plant harmful code that runs for your visitors or admins (up to and including 5.1.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.1.3
- Fixed in
- 5.1.4
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.4 or newer.
- Official ID
- CVE-2026-8853
- Report title
- MW WP Form <= 5.1.3 - Authenticated (Editor+) Stored Cross-Site Scripting via 'memo' Parameter
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 5.1.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.1.3
- Fixed in
- 5.1.4
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.4 or newer.
- Official ID
- CVE-2026-48871
- Report title
- MW WP Form <= 5.1.3 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 5.1.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.1.2
- Fixed in
- 5.1.3
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.3 or newer.
- Official ID
- CVE-2026-6206
- Report title
- MW WP Form <= 5.1.2 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'post_id' Query Parameter
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 5.1.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.1.1
- Fixed in
- 5.1.2
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.2 or newer.
- Official ID
- CVE-2026-5436
- Report title
- MW WP Form <= 5.1.1 - Unauthenticated Arbitrary File Move via regenerate_upload_file_keys
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 5.1.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.1.0
- Fixed in
- 5.1.1
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.1 or newer.
- Official ID
- CVE-2026-4347
- Report title
- MW WP Form <= 5.1.0 - Unauthenticated Arbitrary File Move via move_temp_file_to_upload_dir
- First reported
- Sources
- Wordfence, seen
Someone with an editor account on your site could plant harmful code that runs for your visitors or admins (up to and including 5.0.6)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.0.6
- Fixed in
- 5.1.0
- What to do
- If your site has an affected version, update MW WP Form to version 5.1.0 or newer.
- Official ID
- CVE-2024-24804
- Report title
- MW WP Form <= 5.0.6 - Authenticated (Editor+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger 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 5.0.3
- Fixed in
- 5.0.4
- What to do
- If your site has an affected version, update MW WP Form to version 5.0.4 or newer.
- Official ID
- CVE-2023-6559
- Report title
- MW WP Form <= 5.0.3 - Improper Limitation of File Name to Unauthenticated Arbitrary File Deletion
- First reported
- Sources
- Wordfence, seen
A stranger could run their own code on your site and take it over
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.0.1
- Fixed in
- 5.0.2
- What to do
- If your site has an affected version, update MW WP Form to version 5.0.2 or newer.
- Official ID
- CVE-2023-6316
- Report title
- MW WP Form <= 5.0.1 - Unauthenticated Arbitrary File Upload
- 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 4.4.5
- Fixed in
- 5.0.0
- What to do
- If your site has an affected version, update MW WP Form to version 5.0.0 or newer.
- Official ID
- CVE-2023-46206
- Report title
- MW WP Form <= 4.4.5 - Missing Authorization
- 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 4.4.3
- Fixed in
- 4.4.3
- What to do
- If your site has an affected version, update MW WP Form to version 4.4.3 or newer.
- Official ID
- CVE-2023-28409
- Report title
- MW WP Form <= 4.4.2 - Directory Traversal via _file_upload
- 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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