TI-2026-75299 Aliases CVE-2026-110903

Stored cross-site scripting in WordPress The Events Calendar plugin

LOW 28CWE-79Published 2026-10-16 · Updated 2026-10-16

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Events Calendar plugin for WordPress by Liquid Web and StellarWP is affected through version 6.18.1. The plugin fails to neutralize input during web page generation (CWE-79), so stored script is not filtered. A low-privileged user can store script that runs in another user's browser after that user interacts with a page.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Liquid Web / StellarWP The Events Calendar the-events-calendar allows Stored XSS.This issue affects The Events Calendar: from n/a through 6.18.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00127 2nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Liquid Web / StellarWP	The Events Calendar	up to 6.18.1	—	No fix listed	CNA

The Events Calendar VendorLiquid Web / StellarWP Affected up to 6.18.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for The Events Calendar.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-16 Threatist record created from CVE-2026-110903

References

Other 1

https://patchstack.com/database/wordpress/plugin/the-events-calendar/vulnerability/wordpress-the-events-calendar-plugin-6-18-1-cross-site-scripting-xss-vulnerability?_s_id=cve

TI-2026-56689 WordPress GiveWP plugin <= 4.16.7.1 - Remote Code Execution (RCE) vulnerability CVSS 3.1CRITICAL 10.0
TI-2026-36681 WordPress The Events Calendar plugin 6.15.12-6.16.2 - SQL Injection vulnerability CVSS 3.1CRITICAL 9.3
TI-2026-69253 PHP object injection in WordPress The Events Calendar plugin CVSS 3.1CRITICAL 9.8
TI-2026-67823 Object injection in WordPress Advanced Post Manager plugin CVSS 3.1CRITICAL 9.8
TI-2026-63964 WordPress GiveWP plugin <= 4.16.9 - Broken Authentication vulnerability CVSS 3.1CRITICAL 9.1
TI-2026-83629 SQL injection in WordPress BookIt plugin CVSS 3.1CRITICAL 9.3

See all 37 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences