CVE-2026-42757 CRITICAL

CVE-2026-42757: WordPress WebinarIgnition plugin < 4.08.253 - Arbitrary File Deletion vulnerability

Vendor Saleswonder Team: Tobias
Product WebinarIgnition
Weakness CWE-22 · Path traversal
Published May 27, 2026
Last update May 27, 2026

CVSS base score

9.9/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Saleswonder Team: Tobias WebinarIgnition webinar-ignition allows Path Traversal.This issue affects WebinarIgnition: from n/a through < 4.08.253.

Explanation of Vulnerability in Simple Terms

02Summary

WebinarIgnition versions up to 4.08.253 contain a path traversal vulnerability that allows an authenticated attacker to read, modify, or delete arbitrary files on the server. The vulnerability requires low-level user privileges and network access, but no user interaction. Impact extends beyond the vulnerable component, potentially compromising the entire site.

What an attacker can do

03Attacker Capabilities

Read, modify, or delete arbitrary files on the server.

Potential impact on your site

04Site Impact

An authenticated user can access sensitive files, alter site configuration, or disable the site entirely.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege user account on the site.

Key dates

06Disclosure timeline

May 27, 2026 CVE published
May 27, 2026 Record updated

Related vulnerabilities

08Related CVE