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SiteSEO vulnerabilities
SiteSEO has 4 known vulnerabilities in this database. The most recent published record is dated 19 Nov 2025.
- Known vulnerabilities
- 4
- Active installs
- 500,000+
- Latest version
- 1.4.2
- Last updated
- 24 Sep 2026
- Most recent
- 19 Nov 2025
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Broken access control CVE-2025-13085 | Medium 4.3 | Up to 1.3.2 | Fixed in a later version (latest 1.4.2) | 19 Nov 2025 |
| Broken access control CVE-2025-12814 | Medium 5.3 | Up to 1.3.2 | Fixed in a later version (latest 1.4.2) | 19 Nov 2025 |
| Broken access control CVE-2025-12367 | Medium 4.3 | Up to 1.3.1 | Fixed in a later version (latest 1.4.2) | 1 Nov 2025 |
| Cross-site scripting (XSS) CVE-2025-9277 | Medium 6.4 | Up to 1.2.7 | Fixed in a later version (latest 1.4.2) | 26 Aug 2025 |
Read the published descriptions
- CVE-2025-13085, 19 Nov 2025
- The SiteSEO - SEO Simplified plugin for WordPress is vulnerable to Improper Authorization leading to Sensitive Post Meta Disclosure in versions up to and including 1.3.2. This is due to missing object-level authorization checks in the resolve_variables() AJAX handler. This makes it possible for authenticated attackers with the siteseo_manage capability (e.g., Author-level users who have been granted SiteSEO access by an administrator) to read arbitrary post metadata from any post, page, attachment, or WooCommerce order they cannot edit, via the custom field variable resolution feature granted they have been given access to SiteSEO by an administrator and legacy storage is enabled. In affected WooCommerce installations, this exposes sensitive customer billing information including names, email addresses, phone numbers, physical addresses, and payment methods. CVE record
- CVE-2025-12814, 19 Nov 2025
- The SiteSEO - SEO Simplified plugin for WordPress is vulnerable to unauthorized modification of data due to n incorrect capability check on the siteseo_reset_settings function in all versions up to, and including, 1.3.2. This makes it possible for authenticated attackers, who have been granted access to at least on SiteSEO setting capability, to reset the plugin's settings. CVE record
- CVE-2025-12367, 1 Nov 2025
- The SiteSEO - SEO Simplified plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 1.3.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with Author-level access and above, to enable or disable arbitrary SiteSEO features that they should not have access to. CVE record
- CVE-2025-9277, 26 Aug 2025
- The SiteSEO - SEO Simplified plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the broken preg_replace expression in all versions up to, and including, 1.2.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. CVE record
What to do if you run SiteSEO
If you run SiteSEO, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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