CVE-2026-0556
Stored XSS in XO Event Calendar Plugin Allows Script Injection
Publication date: 2026-02-19
Last updated on: 2026-02-19
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wordfence | xo_event_calendar | to 3.2.10 (inc) |
| xo_event_calendar | xo_event_calendar | to 3.2.10 (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 XO Event Calendar plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in its 'xo_event_field' shortcode in all versions up to and including 3.2.10. This vulnerability arises because the plugin does not properly sanitize or escape user-supplied input attributes. As a result, authenticated users with contributor level access or higher can inject malicious web scripts into pages. These scripts will execute whenever any user accesses the infected page.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know
How can this vulnerability impact me? :
This vulnerability can allow attackers with contributor or higher access to inject malicious scripts into web pages. These scripts can execute in the browsers of users who visit the infected pages, potentially leading to theft of sensitive information, session hijacking, or other malicious actions. The impact includes loss of confidentiality and integrity of data, as indicated by the CVSS score which reflects low complexity and no user interaction required.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know