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.
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Fixes

Solution

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Workaround

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History

Thu, 12 Nov 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 12 Nov 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions knowledge Building
Vendors & Products Wordpress-extensions
Wordpress-extensions knowledge Building

Wed, 11 Nov 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}


Wed, 11 Nov 2026 06:15:00 +0000

Type Values Removed Values Added
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.
Title Knowledge Building < 0.7.3 - Reflected XSS via Comment Reply Response
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-11-11T11:36:58.606Z

Reserved: 2026-11-04T09:44:46.555Z

Link: CVE-2026-121863

cve-icon Vulnrichment

Updated: 2026-11-11T11:19:18.274Z

cve-icon NVD

Status : Deferred

Published: 2026-11-11T06:17:16.877

Modified: 2026-11-12T18:44:50.720

Link: CVE-2026-121863

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-13T10:30:19Z

Weaknesses