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PatchSiren cyber security CVE debrief

CVE-2026-105891 Liquid Web / StellarWP CVE debrief

The CVE-2026-105891 vulnerability affects the WordPress Event Tickets plugin, specifically versions up to 5.30.0.1. This issue is related to a Missing Authorization vulnerability, which allows for Exploiting Incorrectly Configured Access Control Security Levels. The CVSS score for this vulnerability is 4.3, indicating a Medium severity level. Defenders should verify the version of the Event Tickets plugin in use and review access control configurations to prevent potential unauthorized access. This vulnerability has been publicly disclosed and requires verification of plugin versions and access control configurations.

Vendor
Liquid Web / StellarWP
Product
Event Tickets
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-08
Original CVE updated
2026-10-08
Advisory published
2026-10-08
Advisory updated
2026-10-08

Who should care

Defenders responsible for WordPress installations with the Event Tickets plugin should assess their exposure and verify the version of the plugin in use.

Why it matters

CVE-2026-105891 is a Medium-severity vulnerability in the WordPress Event Tickets plugin that requires verification of plugin versions and access control configurations to prevent potential unauthorized access.

  • Verification of plugin version and access control configurations is necessary to prevent potential unauthorized access.

Technical summary

The CVE-2026-105891 vulnerability is a Missing Authorization issue in the WordPress Event Tickets plugin, affecting versions up to 5.30.0.1. This vulnerability is related to Exploiting Incorrectly Configured Access Control Security Levels. The vulnerability allows for potential unauthorized access to event tickets. Defenders should prioritize verifying the version of the Event Tickets plugin in use and ensuring it is updated to a version beyond 5.30.0.1 if possible. They should also review access control configurations for the plugin to prevent exploitation.

Defensive priority

Defenders should prioritize verifying the version of the Event Tickets plugin in use and ensuring it is updated to a version beyond 5.30.0.1 if possible. They should also review access control configurations for the plugin.

Recommended defensive actions

  • Verify the version of the Event Tickets plugin in use
  • Update the plugin to a version beyond 5.30.0.1 if possible
  • Review access control configurations for the plugin

Evidence notes

The CVE record and source item provide details about the vulnerability in the Event Tickets plugin. However, there is limited information on the specific impacts or exploits related to this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-105891 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-105891

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-105891 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-105891

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.