WordPress Plugin Vulnerabilities
Post SMTP < 3.6.3 - Unauthenticated Stored Cross-Site Scripting
Description
The plugin is vulnerable to Stored Cross-Site Scripting 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.
Affects Plugins
Fixed in 3.6.3 References
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Drew Webber (mcdruid)
Verified
No
WPVDB ID
Timeline
Publicly Published
2026-05-28 (about 4 months ago)
Added
2026-06-01 (about 4 months ago)
Last Updated
2026-06-01 (about 4 months ago)
