Time-based Blind SQL Injection in My Calendar Plugin for WordPress
CVE-2026-6854

7.5HIGH

Key Information:

Vendor

WordPress
Status
My Calendar – Accessible Event Manager
Vendor
CVE Published:
8 July 2026

What is CVE-2026-6854?

The My Calendar – Accessible Event Manager plugin for WordPress is susceptible to time-based blind SQL Injection through the 'mc_auth' parameter. This vulnerability arises from inadequate parameter escaping and insufficient SQL query preparation, affecting all versions up to and including 3.7.8. Consequently, this flaw allows unauthenticated attackers to inject additional SQL queries into existing ones, enabling them to extract sensitive data from the database system.

Affected Version(s)

My Calendar – Accessible Event Manager 0 <= 3.7.8

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3515996/my-c...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Leonid Semenenko (lsemenenko)
.