CVE-2026-42758 CRITICAL

CVE-2026-42758: WordPress WebinarIgnition plugin < 4.08.253 - Privilege Escalation vulnerability

Vendor Saleswonder Team: Tobias

Product WebinarIgnition

Weakness CWE-266

Published May 27, 2026

Last update May 27, 2026

View on NVD All CVEs

CVSS base score

9.8/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

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

What the vulnerability does

01Description

Incorrect Privilege Assignment vulnerability in Saleswonder Team: Tobias WebinarIgnition webinar-ignition allows Privilege Escalation.This issue affects WebinarIgnition: from n/a through < 4.08.253.

Explanation of Vulnerability in Simple Terms

02Summary

WebinarIgnition versions 4.08.253 and earlier contain a critical vulnerability that allows unauthenticated attackers to read sensitive data, modify content, or disrupt service without any user interaction. The vulnerability stems from insufficient access controls in the application. All users of affected versions should update immediately.

What an attacker can do

03Attacker Capabilities

Read sensitive data, modify content, or disrupt the service without authentication.

Potential impact on your site

04Site Impact

Attackers can access, modify, or delete webinar data and user information without logging in.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

May 27, 2026 CVE published

May 27, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-42758 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/266.html AskarLabs — CWE-266 write-up Incorrect Privilege Assignment

Related vulnerabilities

Identifiers

CVE CVE-2026-42758

CWE CWE-266

CVSS 9.8 / CRITICAL

Affected versions