CVE-2026-0868
Stored XSS in EMC Calendly WordPress Plugin Allows Script Injection
Publication date: 2026-04-19
Last updated on: 2026-04-19
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| emc | easily_embed_calendly_scheduling_features | to 4.4 (inc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
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.