CVE-2026-42758: WebinarIgnition WordPress Plugin Privilege Escalation
CVE-2026-42758 is an incorrect privilege assignment flaw (CWE-266) in the WebinarIgnition webinar plugin for WordPress that enables privilege escalation. The CNA, Patchstack, rated it 9.8 (Critical) under CVSS 3.1, and the record lists affected versions as those before 4.08.253. The sources consulted do not confirm exploitation in the wild, and the record does not list fixed versions.
Overview
CVE-2026-42758 describes an Incorrect Privilege Assignment weakness, mapped to CWE-266, in the WebinarIgnition plugin published by Saleswonder Team (Tobias) for WordPress. According to the record, the flaw allows privilege escalation. The vulnerability was published on 2026-05-27 and reported by Patchstack. See the NVD entry and the Patchstack advisory.
Impact
- The record classifies the issue as critical, with a CVSS 3.1 base score of 9.8.
- The vector indicates a network attack that requires no privileges and no user interaction, with high impact on confidentiality, integrity and availability.
- A user able to obtain higher privileges within a WordPress site could potentially change site content, settings or user accounts. The record does not describe the specific actions possible, so this remains an inference.
Affected products and versions
- Product: WebinarIgnition (webinar-ignition), a WordPress plugin.
- Affected range: from n/a through versions before 4.08.253.
- The record's affected and fixes lists are empty. The upper boundary of 4.08.253 is the only version information provided.
Exploitation status
The record shows that this CVE is not listed in the CISA Known Exploited Vulnerabilities catalog. No confirmed exploitation in the wild appears in the sources consulted for this analysis. The EPSS probability is 0.00525 with a percentile of 0.42944, as reported in the record.
Remediation and mitigation
- Identify every WordPress site that runs the WebinarIgnition plugin and record its installed version.
- Update the plugin to version 4.08.253 or later. This is an inference from the affected range; the record does not name a fixed release.
- Where updating cannot happen immediately, review which accounts have elevated roles and restrict plugin access to trusted administrators.
- Check the vendor and Patchstack pages for official remediation details before making changes.
Detection guidance
- Review recent changes to user accounts and role assignments, especially new administrator or privileged accounts that were not created by staff.
- Audit logs for unexpected changes to plugin settings or site content.
- Monitor web server and WordPress activity around the WebinarIgnition plugin paths for unusual requests from unknown sources.
Limitations of the available information
The record does not include the vulnerable component or function, the exact privilege level gained, the lower bound of the affected range beyond n/a, fixed version numbers, or any vendor advisory text. Exploitation details and proof-of-concept availability are not described. Conclusions about remediation rely on the affected range boundary alone.
Frequently asked questions
What is CVE-2026-42758?
It is an Incorrect Privilege Assignment flaw (CWE-266) in the WebinarIgnition WordPress plugin that allows privilege escalation, according to the record.
Which versions are affected?
The record lists the affected range as from n/a through versions before 4.08.253. No fixed versions are listed in the record.
Is this vulnerability being actively exploited?
The record does not list it in CISA's Known Exploited Vulnerabilities catalog, and no confirmed exploitation appears in the sources consulted.
What should administrators do?
Identify sites running WebinarIgnition, update to version 4.08.253 or later as an inference from the affected range, and review privileged accounts.
This analysis was drafted with AI assistance from verified source data and automatically checked against it.