Conference Scheduler <= 2.5.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via className Parameter
Affected versions: *-2.5.1
Vulnerability type: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected software, patched versions and attribution
The Conference Scheduler plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘className’ parameter in all versions up to, and including, 2.5.1 due to insufficient input sanitization and output escaping. 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.
Conference Scheduler
Affected versions: *-2.5.1
Patched versions: 2.5.2
Researcher credit: Peter Thaleikis
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- Published
- June 23, 2025
- CVSS
- 6.4