What is CVE-2021-28001?

CVE-2021-28001 is a medium-severity vulnerability in Textpattern, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-08-19.

How severe is CVE-2021-28001?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Textpattern

CVE-2021-28001

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (59.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Textpattern — versions 4.8.4
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-28001?: CVE-2021-28001 is a medium-severity vulnerability in Textpattern, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-08-19.
How severe is CVE-2021-28001?: Medium severity. CVSS v3 base score is 5.4 out of 10.