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WordPress plugin

Popup Builder — Create highly converting, mobile friendly marketing popups. <= 4.4.2 - Improper Authorization to Unauthenticated Subscriber Removal via Predictable Tokens

CVE-2025-13079Published · Updated

Action summary

Affected: ≤4.4.2Update to 4.4.3 or newer

All remediation steps
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-1241 Use of Predictable Algorithm in Random Number Generator
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Popup Builder – Create highly converting, mobile friendly marketing popups. popup-builder

  1. Affected≤ 4.4.2
  2. Patched in4.4.3

Update to 4.4.3 or newer.

You are affected if you run ≤ 4.4.2. Version 4.4.3 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Popup Builder – Create highly converting, mobile friendly marketing popups..
  • 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 4.4.3, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Popup Builder – Create highly converting, mobile friendly marketing popups. to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Rafshanzani Suhada.

The Popup Builder – Create highly converting, mobile friendly marketing popups. plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.4.2. This is due to the plugin generating predictable unsubscribe tokens using deterministic data. This makes it possible for unauthenticated attackers to unsubscribe arbitrary subscribers from mailing lists via brute-forcing the unsubscribe token, granted they know the victim's email address

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Popup Builder – Create highly converting, mobile friendly marketing popups.

All 25
More vulnerabilities in Popup Builder – Create highly converting, mobile friendly marketing popups.
SeverityVulnerabilityCVEPublished
Critical9.1Missing Authorization to Unauthenticated Arbitrary Popup Post Trashing via 'post_type' and 'sg_popup_preview_id' Parameters
≤4.4.5Update to 4.4.6
CVE-2026-89270
Medium5.3Missing Authorization
<4.4.6Update to 4.4.6
CVE-2026-112230
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤4.4.1Update to 4.4.2
CVE-2025-9856
Medium4.4Authenticated (Admin+) Stored Cross-Site Scripting
≤4.3.4Update to 4.3.5
CVE-2024-9428
Medium5.3Sensitive Information Exposure via Imported Subscribers CSV File
≤4.3.6Update to 4.3.7
CVE-2024-2541

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
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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