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CVE-2025-7431

MediumPublished

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

Published: Jul 18, 2025
Updated: Apr 8, 2026
Assigning CNA: Wordfence
Evidence observed: Aug 5, 2026

Primary CVSS

4.4/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 18.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2025-7431PoC
CVE-2025-7431

Responsible use

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