CVE-2026-121862
Knowledge Building < 0.7.3 - Unauthenticated Stored XSS via knbu_new_reply AJAX Action
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Knowledge Building Unknown |
≥ 0; < 0.7.3 (affected, semver)
Other versions: unaffected |
CNA: WPScan |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
- https://wpscan.com/vulnerability/2656cb05-7d95-4e82-acb4-ee62a31715f8/
exploit · CNA: WPScan
References
- https://wpscan.com/vulnerability/2656cb05-7d95-4e82-acb4-ee62a31715f8/CNA: WPScan · exploit, vdb-entry, technical-description
For agents and automation
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Endpoints and access details
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