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Popup Plugin For WordPress — ConvertPlus <= 3.5.30 - Missing Authorization to Authenticated (Subscriber+) Limited Options Update

CVE-2024-13800Published · Updated

Action summary

Affected: ≤3.5.30Update to 3.5.31 or newer

All remediation steps
Watch plugin
Severity
High8.1
CVSS
8.1
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:H Integrity
High
A:H Availability
High
Weakness
CWE-862 Missing Authorization
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

ConvertPlus convertplug

  1. Affected≤ 3.5.30
  2. Patched in3.5.31

Update to 3.5.31 or newer.

You are affected if you run ≤ 3.5.30. Version 3.5.31 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under ConvertPlus.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 3.5.31, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch ConvertPlus to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Lucio Sá.

The ConvertPlus plugin for WordPress is vulnerable to unauthorized modification of data that can lead to a denial of service due to a missing capability check on the 'cp_dismiss_notice' AJAX endpoint in all versions up to, and including, 3.5.30. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update option values to '1' on the WordPress site. This can be leveraged to update an option that would create an error on the site and deny service to legitimate users or be used to set some values to true such as registration.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in ConvertPlus

All 7
More vulnerabilities in ConvertPlus
SeverityVulnerabilityCVEPublished
High8.8Authenticated (Subscriber+) PHP Object Injection via 'style' Parameter
≤3.6.3Update to 3.6.4
CVE-2026-87741
High7.5Authenticated (Contributor+) PHP Object Injection
≤3.5.26Update to 3.5.26.1
CVE-2024-4838
Medium5.4Missing Authorization to Authenticated (Subscriber+) Limited Arbitrary Options Update
≤3.5.25Update to 3.5.26
CVE-2024-3237
High8.8Authenticated (Contributor+) PHP Object Injection
≤3.5.25Update to 3.5.26
CVE-2024-3240
High7.5Unauthorized Account Creation
≤3.4.4Update to 3.4.5
CVE-2019-15863

Same weakness (Missing Authorization)

All Missing Authorization
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CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
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CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity high, CVSS 8.1

  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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