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Medium · 4.4 Public exploit CVE-2025-7431 EUVD-2025-21836GHSA-qgfh-p4wr-7fq4

Knowledge Base <= 2.3.1 - Authenticated (Administrator+) Stored Cross-Site Scripting via Plugin Slug

Published Jul 18, 2025 · Updated Apr 8, 2026 · Assigned by Wordfence

Vendor: ajay Product: Knowledge Base Category: Web / CMS

Description

The Knowledge Base plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin slug setting in all versions up to, and including, 2.3.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

VendorProductAffectedFixed
ajay Knowledge Base ≤ 2.3.1 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References