Arbitrary File Upload Vulnerability in YaySMTP Plugin for WordPress
CVE-2026-92553

8.8HIGH

Key Information:

Vendor

WordPress
Status
Yaysmtp – WP Mail Smtp With Email Logs, Tracking & Reports
Vendor
CVE Published:
16 October 2026

What is CVE-2026-92553?

The YaySMTP plugin for WordPress is susceptible to an Arbitrary File Upload vulnerability, allowing authenticated attackers with subscriber-level access or higher to upload potentially executable files. This vulnerability arises from inadequate file type validation in the putFile function, where the sanitize_file_name() function fails to eliminate executable extensions and lacks a proper allow-list or MIME type checks. The only server-side safeguard, a .htaccess rule, is ineffective on certain server configurations, including those running nginx or Apache with AllowOverride set to None, thus enabling the possibility of remote code execution.

Affected Version(s)

YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports 0 <= 2.7.7

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/yaysmtp/tags/2...
https://plugins.trac.wordpress.org/browser/yaysmtp/tags/2...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Wordfence PRISM
.