CVE-2026-110903 Liquid Web / StellarWP CVE debrief

Who should care

Defenders responsible for WordPress installations with The Events Calendar plugin should assess exposure and prioritize updates to version 6.18.2 or later. This includes reviewing and monitoring plugin usage for potential malicious activity and implementing additional security measures to prevent XSS attacks. Defenders must verify plugin versions and update to 6.18.2 or later to mitigate this vulnerability.

Why it matters

CVE-2026-110903 is a Cross Site Scripting (XSS) vulnerability in The Events Calendar WordPress plugin. Defenders should prioritize updates to prevent potential malicious script injection.

• Attackers may inject malicious scripts into web pages, potentially leading to unauthorized actions or data theft.
• Successful exploitation could result in compromised user sessions or modification of web content.
• Defenders must verify plugin versions and update to 6.18.2 or later to mitigate this vulnerability.
• Exposure requires verification from official sources due to limited information on actual exploitation.

Technical summary

The Events Calendar WordPress plugin versions up to 6.18.1 are vulnerable to Stored Cross Site Scripting (XSS). This vulnerability allows attackers to inject malicious scripts into web pages, potentially leading to unauthorized actions or data theft. Defenders should prioritize updating The Events Calendar plugin to version 6.18.2 or later to mitigate this vulnerability.

Defensive priority

Defenders should prioritize updating The Events Calendar plugin to version 6.18.2 or later to mitigate this vulnerability.

Recommended defensive actions

• Update The Events Calendar plugin to version 6.18.2 or later
• Review and monitor plugin usage for potential malicious activity
• Implement additional security measures to prevent XSS attacks

Evidence notes

The CVE Program and NVD have documented this vulnerability, providing details on its existence and potential impact. The vulnerability affects The Events Calendar WordPress plugin versions up to 6.18.1. There is limited information on actual exploitation, and defenders must verify plugin versions and update to 6.18.2 or later to mitigate this vulnerability. Exposure requires verification from official sources due to limited information on actual exploitation.

Sources and 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.