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Input validation vulnerability in Events Calendar Made Simple – Pie Calendar 1.2.9

  • Severity: medium-risk
  • Status: Fixed
  • Publication: October 16, 2025

A popular add-on for WordPress called Pie Calendar has a security issue. This problem, known as Stored Cross-Site Scripting, affects versions 1.2.9 and below. The plugin does not properly clean up user input or protect against malicious code. This means that hackers who have contributor-level access or higher can insert their own code into pages, which will run whenever someone visits that page.

Detected in:

Events Calendar Made Simple – Pie Calendar fixed vulnerable versions: >= * <= 1.2.9
Pie Calendar – Events Calendar Made Simple fixed vulnerable versions:

This information is sourced from www.wpvulnerability.com. An open-source database of vulnerabilities maintained by the community. Help us out by submitting vulnerabilities!

Version compare shows which versions have a vulnerability. For example: >= 2.2.8 <= 2.2.21 means:

> from 2.2.8
= including 2.2.8 & 2.2.21
< to 2.2.21

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