CVE-2026-121862
Knowledge Building < 0.7.3 - Unauthenticated Stored XSS via knbu_new_reply AJAX Action
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
The Knowledge Building WordPress plugin before 0.7.3 does not sanitise and escape comments submitted through its reply feature, and publishes them without moderation, allowing unauthenticated users to perform Stored Cross-Site Scripting attacks against any visitor of the affected posts, including administrators.
| Vendor | unknown |
| Product | knowledge building |
| Published | Nov 11, 2026 |
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Affected Versions
Unknown / Knowledge Building
0 < 0.7.3
References
Credits
Enrico Marcolini Claudio Marchesini Dottor Marc WPScan