Executive Summary

CVE-2026-39505 is a broken access control vulnerability in the WordPress Seriously Simple Podcasting plugin versions up to and including 3.14.2.

This issue arises from missing authorization, authentication, or nonce token checks in certain functions, allowing unauthenticated users to perform actions that require higher privileges.

The vulnerability is classified under the OWASP Top 10 category A1: Broken Access Control.

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Impact Analysis

This vulnerability allows unauthenticated users to perform actions that normally require higher privileges, potentially leading to unauthorized changes or access within the affected plugin.

Although the CVSS score is 5.3, indicating a low severity impact, such vulnerabilities are often exploited in mass campaigns targeting many websites indiscriminately.

Users of the Seriously Simple Podcasting plugin versions up to 3.14.2 are advised to update to version 3.14.3 or later to mitigate this risk.

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Mitigation Strategies

To mitigate the CVE-2026-39505 vulnerability, users should update the Seriously Simple Podcasting plugin to version 3.14.3 or later, where the issue has been patched.

Additionally, using mitigation services such as Patchstack's auto-updates for vulnerable plugins can help reduce the risk.

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Detection Guidance

This vulnerability is a broken access control issue in the Seriously Simple Podcasting WordPress plugin versions up to 3.14.2, allowing unauthenticated users to perform privileged actions. Detection typically involves checking the plugin version installed on your WordPress site.

To detect if your system is vulnerable, you can verify the plugin version by running commands that query the WordPress plugin list or by inspecting the plugin files directly.

• Use WP-CLI to check the plugin version: wp plugin list --status=active
• Look for 'seriously-simple-podcasting' in the output and check if the version is less than or equal to 3.14.2.
• Alternatively, inspect the plugin's main file header or version.php file in the plugin directory to determine the installed version.

Since the vulnerability requires no authentication to exploit, monitoring for unusual or unauthorized access attempts to plugin-specific endpoints or functions could also help detect exploitation attempts, but specific commands or signatures are not provided.

The recommended mitigation is to update the plugin to version 3.14.3 or later.

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Compliance Impact

The provided information does not specify how the missing authorization vulnerability in Seriously Simple Podcasting directly affects compliance with common standards and regulations such as GDPR or HIPAA.

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