Authorization Flaw in WPExperts Post SMTP Plugin
CVE-2026-81278

5.4MEDIUM

Key Information:

Vendor

WordPress
Status
Post Smtp
Vendor
CVE Published:
31 August 2026

What is CVE-2026-81278?

A Missing Authorization vulnerability exists in the WPExperts Post SMTP plugin, which results from incorrect access control configurations. This flaw can potentially allow unauthorized users to exploit the system, leading to security breaches. Users running versions from 4.0.0 to beta.1 are particularly at risk, making it critical to review access control settings and apply necessary updates.

Affected Version(s)

Post SMTP 4.0.0

References

https://patchstack.com/database/wordpress/plugin/post-smt...
vdb-entry

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

mad4cyber | Patchstack Bug Bounty Program
.