What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in useStrict UseStrict's Calendly Embedder cal-embedder-lite allows Stored XSS.This issue affects UseStrict's Calendly Embedder: from n/a through <= 1.1.7.2.
Explanation of Vulnerability in Simple Terms
02Summary
UseStrict's Calendly Embedder versions up to 1.1.7.2 contain a cross-site scripting (XSS) vulnerability. An authenticated administrator with high privileges can inject malicious scripts that execute in other users' browsers when they view affected pages. The vulnerability requires user interaction and can affect the confidentiality, integrity, and availability of the site.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers when they visit the site.
Potential impact on your site
04Site Impact
An admin account could be compromised to inject scripts affecting other users' sessions and data.
Conditions required to exploit
05Prerequisites
Attacker must have high-level admin privileges and the victim must visit a page containing the injected payload.
Key dates
06Disclosure timeline
December 9, 2025
CVE published
April 28, 2026
Record updated