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Stored cross-site scripting in The Events Calendar WordPress plugin

Priority LOW 28CWE-79Published · Updated

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

Liquid Web and StellarWP's The Events Calendar plugin for WordPress, through 6.18.3, does not neutralize input during web page generation (CWE-79). An attacker with low privileges can store script that runs in another user's browser after that user interacts with the page.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

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 6.18.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00224 13th 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

VendorProductAffected versionsFixed inStatusSource
Liquid Web / StellarWPThe Events Calendarup to 6.18.3—No fix listedCNA

Remediation

The sources list no fixed version for The Events Calendar.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Timeline

  1. 2026-11-07 Threatist record created from CVE-2026-123464
  2. 2026-11-07 Alias added: GHSA-j296-23f6-2mmc
  3. 2026-11-07 CISA SSVC decision points changed
  4. 2026-11-07 Priority changed: MEDIUM → LOW

References

  • 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