PT-2025-26708 · WordPress · Conference Scheduler

Peter Thaleikis · Published 2025-06-24 · Updated 2025-06-24 · CVE-2025-5258

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Conference Scheduler plugin for WordPress versions up to, and including, 2.5.1

Description: The issue is related to Stored Cross-Site Scripting due to insufficient input sanitization and output escaping via the className parameter. This allows 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.

Recommendations: For versions up to, and including, 2.5.1, avoid using the className parameter in the affected plugin until the issue is resolved. As a temporary workaround, consider restricting access to the plugin's functionality to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-5258

Affected Products

Conference Scheduler

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2025-5258 · Security Note
• https://plugins.trac.wordpress.org/browser/conference-scheduler/trunk/conf-scheduler.php#L1703 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/0d0a03e5-b09c-430d-aa65-8ef9e01cf241?source=cve · Note
• https://wordpress.org/plugins/conference-scheduler/#developers · Note
• https://plugins.trac.wordpress.org/changeset/3316436 · Note
• https://twitter.com/CVEnew/status/1937418472247689411 · Twitter Post
• https://t.me/cvetracker/26923 · Telegram Post