Read the docs
TI-2018-13371 Aliases CVE-2018-18872GHSA-3g88-qmx9-g9vc

The Kieran O'Shea Calendar plugin before 1.3.11 for WordPress has Stored XSS via the…

Priority LOW 26CWE-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 · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

The Kieran O'Shea Calendar plugin before 1.3.11 for WordPress has Stored XSS via the event_title parameter in a wp-admin/admin.php?page=calendar add action, or the category name during category creation at the wp-admin/admin.php?page=calendar-categories URI.

Why it matters now

EPSS 0.00716 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kieranoshea:calendar:*:*:*:*:*:wordpress:*:*before 1.3.11Vulnerablekieranoshea
  • cpe:2.3:a:kieranoshea:calendar:*:*:*:*:*:wordpress:*:* Versions before 1.3.11 Vulnerable ·kieranoshea

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-18872
  2. 2026-10-03 Alias added: GHSA-3g88-qmx9-g9vc

References

Exploit 1

  • TI-2013-02359 Cross-site request forgery (CSRF) vulnerability in the Calendar plugin before 1.3.3 for… CVSS 2.0MEDIUM 6.8

Sources

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