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6.5

WPCal.Io Can Inject Malicious Code into Web Pages

CVE-2025-66103 · published 10 months ago
Summary

A security weakness in WPCal.Io allows an attacker to inject malicious code into web pages, potentially allowing them to steal sensitive information or take control of user sessions. This issue affects all versions of WPCal.Io up to 0.9.5.9. To fix this, update WPCal.Io to a version newer than 0.9.5.9.

Original advisory text
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in revmakx WPCal.io wpcal allows DOM-Based XSS.This issue affects WPCal.io: from n/a through <= 0....
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in revmakx WPCal.io wpcal allows DOM-Based XSS.This issue affects WPCal.io: from n/a through <= 0.9.5.9.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
6.5 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published30 Dec 2025
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-66103 · NVD
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