Unrated severityNVD Advisory· Published Feb 18, 2025· Updated Apr 8, 2026
Post SMTP <= 3.0.2 - Unauthenticated Stored Cross-Site Scripting
CVE-2025-0521
Description
The Post SMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the from and subject parameter in all versions up to, and including, 3.0.2 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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- saadiqbal/Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile Appv5Range: 0
Patches
Vulnerability mechanics
References
2News mentions
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