CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Lifecycle Timeline
3Tags
Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Simpma Embed Calendly embed-calendly-scheduling allows Stored XSS.This issue affects Embed Calendly: from n/a through <= 4.4.
Analysis
A Stored Cross-Site Scripting (XSS) vulnerability exists in the Simpma Embed Calendly plugin (versions up to and including 4.4) that allows authenticated attackers to inject malicious scripts into web pages. An attacker with login privileges can craft malicious input that persists in the application and executes in the browsers of other users who view the affected content, potentially compromising session tokens, credentials, or sensitive data. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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External POC / Exploit Code
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EUVD-2026-11928