CVE-2026-0868
Received Received - Intake

Stored XSS in EMC Calendly WordPress Plugin Allows Script Injection

Publication date: 2026-04-19

Last updated on: 2026-04-19

Assigner: Wordfence

Description
The EMC – Easily Embed Calendly Scheduling Features plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's calendly shortcode in all versions up to, and including, 4.4 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-04-19
Last Modified
2026-04-19
Generated
2026-07-06
AI Q&A
2026-04-19
EPSS Evaluated
2026-07-04
NVD
CVE-2026-0868
EUVD
EUVD-2026-23681

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
emc easily_embed_calendly_scheduling_features to 4.4 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

The vulnerability exists in the EMC – Easily Embed Calendly Scheduling Features plugin for WordPress, specifically in all versions up to and including 4.4. It is a Stored Cross-Site Scripting (XSS) issue caused by insufficient input sanitization and output escaping on user-supplied attributes within the plugin's calendly shortcode.

This flaw allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These scripts will execute whenever any user accesses the injected page.

Impact Analysis

This vulnerability can lead to arbitrary script execution in the context of the affected website. An attacker with contributor-level access can inject malicious scripts that execute when other users view the compromised pages.

  • Potential impacts include theft of user credentials or session tokens.
  • Unauthorized actions performed on behalf of users.
  • Defacement or manipulation of website content.
Compliance Impact

The vulnerability allows authenticated attackers with contributor-level access to inject arbitrary web scripts via stored cross-site scripting (XSS). This can lead to unauthorized access to user data or manipulation of content, potentially compromising confidentiality and integrity.

Such security weaknesses may impact compliance with standards and regulations like GDPR and HIPAA, which require protection of personal data and secure handling of information to prevent unauthorized access or disclosure.

However, specific impacts on compliance depend on the context of use, the data involved, and the presence of mitigating controls.

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