Description
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.
Published: 2026-11-11
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

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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': 'total'}, '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': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


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 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.
Title Knowledge Building < 0.7.3 - Unauthenticated Stored XSS via knbu_new_reply AJAX Action
References

Subscriptions

Wordpress-extensions Knowledge Building
cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-11-11T11:37:13.591Z

Reserved: 2026-11-04T09:44:43.979Z

Link: CVE-2026-121862

cve-icon Vulnrichment

Updated: 2026-11-11T11:19:28.469Z

cve-icon NVD

Status : Deferred

Published: 2026-11-11T06:17:16.710

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

Link: CVE-2026-121862

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')