CVE-2026-27398 MEDIUM

CVE-2026-27398: WordPress RSVP and Event Management plugin <= 2.7.16 - Broken Access Control vulnerability

Vendor Wp Chill
Product RSVP and Event Management
Weakness CWE-862 · Missing authorization
Published May 25, 2026
Last update May 26, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Missing Authorization vulnerability in WP Chill RSVP and Event Management allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects RSVP and Event Management: from n/a through 2.7.16.

Explanation of Vulnerability in Simple Terms

02Summary

WP Chill RSVP and Event Management through version 2.7.16 lacks proper authorization checks, allowing unauthenticated attackers to modify event data over the network. The vulnerability requires no user interaction and affects data integrity. Site administrators should update to a version newer than 2.7.16 when available.

What an attacker can do

03Attacker Capabilities

Modify event information without authentication or permission.

Potential impact on your site

04Site Impact

Event data can be altered by unauthorized users, potentially disrupting event management and attendee information.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

May 25, 2026 CVE published
May 26, 2026 Record updated

Related vulnerabilities

08Related CVE