High severity7.2NVD Advisory· Published Feb 18, 2025· Updated Jun 17, 2026

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

Wpexperts/Post SMTP
cpe:2.3:a:wpexperts:post_smtp:*:*:*:*:*:wordpress:*:*
Range: <3.1.0
WordPress/Post SMTPllm-fuzzy
Range: <=3.0.2
Package: https://wordpress.org/plugins/post-smtp
saadiqbal/Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile Appv5
Range: 0

Patches

Vulnerability mechanics

References

plugins.trac.wordpress.org/changesetnvdPatch
www.wordfence.com/threat-intel/vulnerabilities/id/366dfbf1-870c-4ce3-abc4-a2b2f4e72175nvdThird Party Advisory

News mentions

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