CVE-2025-0953: SMTP for Sendinblue – YaySMTP <= 1.1.1 - Unauthenticated Stored Cross-Site Scripting via Email Logs
First published: Sat Feb 22 2025(Updated: )
The SMTP for Sendinblue – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.1.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Credit: security@wordfence.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Sendinblue | <=1.1.1 | |
| <1.2 |
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Reference Links
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e7ba65ac-e568-4c13-961d-6453f281d9fc?source=cve
- https://wordpress.org/plugins/smtp-sendinblue/#developers
- https://plugins.trac.wordpress.org/browser/smtp-sendinblue/trunk/includes/Helper/Utils.php
- https://plugins.trac.wordpress.org/browser/smtp-sendinblue/trunk/includes/Functions.php
- https://plugins.trac.wordpress.org/changeset/3234379/
Frequently Asked Questions
What is the severity of CVE-2025-0953?
The severity of CVE-2025-0953 is critical due to its potential for Stored Cross-Site Scripting attacks.
How do I fix CVE-2025-0953?
To fix CVE-2025-0953, update the Sendinblue YaySMTP plugin to version 1.1.2 or later.
Who is affected by CVE-2025-0953?
CVE-2025-0953 affects users of the Sendinblue YaySMTP plugin for WordPress versions up to and including 1.1.1.
What type of vulnerability is CVE-2025-0953?
CVE-2025-0953 is a Stored Cross-Site Scripting vulnerability resulting from insufficient input sanitization and output escaping.
Can unauthenticated users exploit CVE-2025-0953?
Yes, unauthenticated attackers can exploit CVE-2025-0953 to inject arbitrary web scripts.
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- vendor/sendinblue
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- vendor/yaycommerce