CVE-2025-5533
Knowledge Base <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The Knowledge Base plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'kbalert' shortcode in all versions up to, and including, 2.3.0 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.
| CWE | CWE-79 |
| Vendor | ajay |
| Product | knowledge base |
| Published | Jun 6, 2025 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
ajay / Knowledge Base
0 ≤ 2.3.0
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/400564ba-70f8-4566-b2e7-cfa6450b609e?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3306850%40knowledgebase&new=3306850%40knowledgebase&sfp_email=&sfph_mail=
Credits
Muhammad Yudha - DJ