Unauthorized Access Vulnerability in Events Calendar Plugin by WordPress
CVE-2026-13390

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
The Events Calendar
Vendor
CVE Published:
27 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13390?

The Events Calendar plugin for WordPress prior to version 6.16.5.1 features a security flaw that allows attackers to bypass authorization checks on specific Event Aggregator import REST API routes. This vulnerability can be exploited by unauthenticated users to mark existing import records as failed and insert arbitrary content into hidden comment records, potentially compromising the integrity of event data.

Affected Version(s)

The Events Calendar 0 < 6.16.5.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-13390 - Proof of Concept

References

https://wpscan.com/vulnerability/c7d3b1c5-3b3a-4359-aa41-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Haitam Lazaar
WPScan
.