The Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘event_type’ parameter in all versions up to, and including, 3.8.0 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. The vulnerability is only exploitable when the Post SMTP Pro plugin is also installed and its Reporting and Tracking extension is enabled.
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History
Wed, 18 Mar 2026 15:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘event_type’ parameter in all versions up to, and including, 3.8.0 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. The vulnerability is only exploitable when the Post SMTP Pro plugin is also installed and its Reporting and Tracking extension is enabled. | |
| Title | Post SMTP <= 3.8.0 - Unauthenticated Stored Cross-Site Scripting via 'event_type' | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published:
Updated: 2026-03-18T15:28:29.140Z
Reserved: 2026-02-24T01:24:00.305Z
Link: CVE-2026-3090
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Status : Received
Published: 2026-03-18T16:16:28.560
Modified: 2026-03-18T16:16:28.560
Link: CVE-2026-3090
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OpenCVE Enrichment
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Weaknesses