CVE-2026-42757

WebinarIgnition – Live, Automated & Evergreen Webinar System also for WooCommerce < 4.08.253 - Authenticated (Subscriber+) Arbitrary File Deletion

2026-05-30 00:00

Strategic Overview

Status: Patched in 4.08.253
Affected Plugin: WebinarIgnition – Live, Automated & Evergreen Webinar System also for WooCommerce
Affected Version: < 4.08.253
CVSS: 8.1High
Weakness type: CWE-266 · Incorrect Privilege Assignment
CVE: CVE-2026-42757

View all WebinarIgnition – Live, Automated & Evergreen Webinar System also for WooCommerce vulnerabilities

At a glance

CVE-2026-42757 is a high-severity Incorrect Privilege Assignment vulnerability in the WebinarIgnition WordPress plugin, affecting versions < 4.08.253. It carries a CVSS score of 8.1 (reachable over the network; low attack complexity; high integrity, availability impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 4.08.253; sites on affected versions should update now. Disclosed May 2026, reported by hhhai.

Vulnerability Overview

The WebinarIgnition – Live, Automated & Evergreen Webinar System also for WooCommerce plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in all versions up to 4.08.253 (exclusive). This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php).

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on integrity, availability.

CWE-266: Incorrect Privilege Assignment

A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

Remediation

Update to version 4.08.253, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: WebinarIgnition 4.08.253 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-42757 https://www.wordfence.com/threat-intel/vulnerabilities/id/c24e00b5-4014-42fc-818d-3877dfbd3fda https://nvd.nist.gov/vuln/detail/CVE-2026-42757

Related records

Same weakness class

9.8CVE-2026-42758: WebinarIgnition Privilege EscalationCVE-2026-42758

Other vulnerabilities in WebinarIgnition – Live, Automated & Evergreen Webinar System also for WooCommerce

CVSS Vector

8.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh

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