CVE-2026-81278

MEDIUM 5.4

WordPress Post SMTP plugin 4.0.0-beta.1 - Settings Change vulnerability

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

Missing Authorization vulnerability in WPExperts Post SMTP allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Post SMTP: from 4.0.0 through beta.1.

CWE	CWE-862
Vendor	wpexperts
Product	post smtp
Published	Aug 31, 2026

Stay Ahead of the Next One

Get instant alerts for wpexperts post smtp

Be the first to know when new medium vulnerabilities affecting wpexperts post smtp are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Affected Versions

WPExperts / Post SMTP

4.0.0 ≤ beta.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/wordpress/plugin/post-smtp/vulnerability/wordpress-post-smtp-plugin-4-0-0-beta-1-settings-change-vulnerability?_s_id=cve

Credits

mad4cyber | Patchstack Bug Bounty Program