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SureMail vulnerabilities
SureMail has 1 known vulnerability in this database. The most recent published record is dated 2 Dec 2025.
- Known vulnerabilities
- 1
- Active installs
- 200,000+
- Latest version
- 2.0.2
- Last updated
- 20 Aug 2026
- Most recent
- 2 Dec 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 |
|---|---|---|---|---|
| Remote code execution CVE-2025-13516 | High 8.1 | Up to 1.9.0 | Fixed in a later version (latest 2.0.2) | 2 Dec 2025 |
Read the published descriptions
- CVE-2025-13516, 2 Dec 2025
- The SureMail - SMTP and Email Logs Plugin for WordPress is vulnerable to Unrestricted Upload of File with Dangerous Type in versions up to and including 1.9.0. This is due to the plugin's save_file() function in inc/emails/handler/uploads.php which duplicates all email attachments to a web-accessible directory (wp-content/uploads/suremails/attachments/) without validating file extensions or content types. Files are saved with predictable names derived from MD5 hashes of their content. While the plugin attempts to protect this directory with an Apache .htaccess file to disable PHP execution, this protection is ineffective on nginx, IIS, and Lighttpd servers, or on misconfigured Apache installations. This makes it possible for unauthenticated attackers to achieve Remote Code Execution by uploading malicious PHP files through any public form that emails attachments, calculating the predictable filename, and directly accessing the file to execute arbitrary code granted they are exploiting a site running on an affected web server configuration. CVE record
What to do if you run SureMail
If you run SureMail, 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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