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WordPress plugin

Various Plugins <= Various Version — Use of Polyfill.io

379a5016-3968-4b28-8d6e-0f517e419016Published · Updated

Action summary

User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission: Affected: ≤4.0.7Update to 4.0.8 or newer

weForms – Easy Drag & Drop Contact Form Builder For WordPress: Affected: ≤1.6.23Update to 1.6.24 or newer

OpenStreetMap for Gutenberg and WPBakery Page Builder (formerly Visual Composer): Affected: all versionsNo patch available

Pixel Manager for WooCommerce – Conversion Tracking, Google Ads, GA4, TikTok, Dynamic Remarketing: Affected: ≤1.43.3Update to 1.43.4 or newer

Qualified Electronic Signatures by eID Easy: Affected: ≤3.3.0Update to 3.3.1 or newer

Digital River Global Commerce: Affected: all versionsNo patch available

What to do until a fix ships
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-348 Use of Less Trusted Source
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission wp-user-frontend

  1. Affected≤ 4.0.7
  2. Patched in4.0.8

Update to 4.0.8 or newer.

You are affected if you run ≤ 4.0.7. Version 4.0.8 and later are not affected by this issue.

weForms – Easy Drag & Drop Contact Form Builder For WordPress weforms

  1. Affected≤ 1.6.23
  2. Patched in1.6.24

Update to 1.6.24 or newer.

You are affected if you run ≤ 1.6.23. Version 1.6.24 and later are not affected by this issue.

OpenStreetMap for Gutenberg and WPBakery Page Builder (formerly Visual Composer) stepbyteservice-openstreetmap

  1. Affectedall versions
  2. PatchedNo fix yet

No patched version available.

You are affected if you run all versions. No fixed version has been released.

Pixel Manager for WooCommerce – Conversion Tracking, Google Ads, GA4, TikTok, Dynamic Remarketing woocommerce-google-adwords-conversion-tracking-tag

  1. Affected≤ 1.43.3
  2. Patched in1.43.4

Update to 1.43.4 or newer.

You are affected if you run ≤ 1.43.3. Version 1.43.4 and later are not affected by this issue.

Qualified Electronic Signatures by eID Easy eid-easy-qualified-electonic-signature

  1. Affected≤ 3.3.0
  2. Patched in3.3.1

Update to 3.3.1 or newer.

You are affected if you run ≤ 3.3.0. Version 3.3.1 and later are not affected by this issue.

Digital River Global Commerce digital-river-global-commerce

  1. Affectedall versions
  2. PatchedNo fix yet

No patched version available.

You are affected if you run all versions. No fixed version has been released.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 4.0.8, or a newer patched version
  2. Update to version 1.6.24, or a newer patched version
  3. No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
  4. Update to version 1.43.4, or a newer patched version
  5. Update to version 3.3.1, or a newer patched version
  6. No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
  7. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  8. Watch User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence.

Multiple plugins for WordPress are vulnerable to malicious redirection in various versions. This is due to the use of Polyfill.io. Polyfill.io is a JavaScript library used to streamline delivery of content across older browsers and was taken over by malicious threat actors that used the service to redirect victims to malicious websites. While many WordPress plugins utilize Polyfill.io, not all of them may have been delivering malicious content. Regardless, it is recommended to update to a version of the plugin where Polyfill is no longer used or manually remove the use of Polyfill.io from the plugin.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission

All 43
More vulnerabilities in User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Taxonomy Field Text-Input
≤4.3.13Update to 4.3.14
CVE-2026-109214
Medium6.1Reflected Cross-Site Scripting via 'field_attr[required]' Parameter
≤4.3.13Update to 4.3.14
CVE-2026-103962
High8.8Authenticated (Subscriber+) Privilege Escalation via post_content Parameter
≤4.3.13Update to 4.3.14
CVE-2026-120070
Medium4.3Missing Authorization
≤4.3.13Update to 4.3.14
CVE-2026-52708
Medium5.3Missing Authorization
≤4.3.13Update to 4.3.14
CVE-2026-48884

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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