Authentication Flaws in Melhor Envio Plugin for WordPress
CVE-2026-54804

7.6HIGH

Key Information:

Vendor

WordPress
Status
Melhor Envio
Vendor
CVE Published:
17 June 2026

What is CVE-2026-54804?

The Melhor Envio plugin for WordPress, specifically versions up to 2.16.3, is susceptible to a Broken Authentication vulnerability. This flaw allows unauthorized access to subscriber accounts, compromising user data and potentially leading to further exploitation. Website administrators using these versions should take immediate action to secure their sites.

Affected Version(s)

Melhor Envio <= 2.16.3

References

https://patchstack.com/database/wordpress/plugin/melhor-e...
vdb-entry

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

HieuPenguinnn | Patchstack Bug Bounty Program
.