VULNERABILITY INTELLIGENCE

CVE-2021-28001

CVSS score5.4 MEDIUM
EPSS probability1.02%
CISA KEVNot currently listed
Published2021-08-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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.

Weakness classification

  • nvd@nist.gov: CWE-79

Primary references