HIGHCVSS v3.1 8.8Vulnerability

CVE-2026-121862

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.

Properties

Severity
HIGH
Nvd fetched at
2026-11-11T23:49:45.533241+00:00
Epss score
0.0022
Cvss severity
HIGH
Cvss score
8.8
Retrieved at
2026-11-11T23:51:13+00:00
Last source
FIRST EPSS
Cvss version
3.1
Score
8.8
Cve id
CVE-2026-121862
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
First seen by Signal
2026-11-11T07:36:44+00:00
Name
CVE-2026-121862
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published at
2026-11-11T06:17:16.710
Last modified
2026-11-11T12:19:35.570
Epss percentile
0.12688

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CVE-2026-121862 (CVSS v3.1 8.8) — Ninja Signal Threat Intelligence | Ninja Signal