CVE-2021-28001

PoC —

CVSS 3.1

5.4 medium

EPSS

1%p61

Published

Aug 19, 2021 (Aug 19, 2021)

Modified

Jun 17, 2026

Description

A cross-site scripting vulnerability was discovered in the Comments parameter in Textpattern CMS 4.8.4 which allows remote attackers to execute arbitrary code via a crafted payload entered into the URL field. The vulnerability is triggered by users visiting https://site.com/articles/welcome-to-your-site#comments-head.

Vendors: textpattern
Products: textpattern
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (1.0%)

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