What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jonathan Jernigan Pie Calendar pie-calendar allows DOM-Based XSS.This issue affects Pie Calendar: from n/a through <= 1.2.8.
Explanation of Vulnerability in Simple Terms
02Summary
Pie Calendar versions 1.2.8 and earlier contain a cross-site scripting (XSS) vulnerability that allows an authenticated attacker to inject malicious scripts. The vulnerability requires user interaction—typically clicking a crafted link—and can affect other users viewing the same page. An attacker with low privileges can inject code that steals session data or performs actions on behalf of other users.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers and steals their session data or performs actions on their behalf.
Potential impact on your site
04Site Impact
Users' accounts and data are at risk if they interact with attacker-controlled content; session hijacking and unauthorized actions are possible.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site; victim must click a crafted link or visit a page containing the payload.
Key dates
06Disclosure timeline
September 3, 2025
CVE published
April 28, 2026
Record updated