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OpenAdvisories
High · 7.1 CVE-2026-121863 EUVD-2026-123187GHSA-5542-wp67-24rf

Knowledge Building < 0.7.3 - Reflected XSS via Comment Reply Response

Published Nov 11, 2026 · Updated Nov 11, 2026 · Assigned by WPScan

Description

The Knowledge Building WordPress plugin before 0.7.3 does not escape several user-supplied values before echoing them back in the response of an AJAX action available to unauthenticated users, and serves that response as HTML, leading to a Reflected Cross-Site Scripting.

Affected products

VendorProductAffectedFixed
— Knowledge Building < 0.7.3 0.7.3

References