The Campaign Monitor Forms plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ajax_dismiss_notice function in versions up to, and including, 2.5.5. This makes it possible for authenticated attackers to update arbitrary options to a value of 'true'.
CVE-2023-5098 is a high severity with CVSS 7.1 Vulnerability issue affecting the Plugin Campaign Monitor Forms by Optin Cat. It affects Versions up to 2.5.5 and is fixed in 2.5.6.
Use the related hub and response guides to connect this CVE-2023-5098 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2023-5098 is tracked for the Plugin Campaign Monitor Forms by Optin Cat as high severity with CVSS 7.1. The affected range is Versions up to 2.5.5. Update Campaign Monitor Forms by Optin Cat to 2.5.6 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 2.5.5.
Confirm Campaign Monitor Forms by Optin Cat is updated to 2.5.6 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
campaign-monitor-wp
View on wordpress.org
|
| CVE | CVE-2023-5098 |
| Patched Versions |
2.5.6
|
| Affected Versions |
Versions up to 2.5.5
|
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