VULNERABILITY INTELLIGENCE

CVE-2021-24153

CVSS score5.4 MEDIUM

EPSS probability1.11%

CISA KEVNot currently listed

Published2021-04-05

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 Stored Cross-Site Scripting vulnerability was discovered in the Yoast SEO WordPress plugin before 3.4.1, which had built-in blacklist filters which were blacklisting Parenthesis as well as several functions such as alert but bypasses were found.

Weakness classification

contact@wpscan.com: CWE-79
nvd@nist.gov: CWE-79

Primary references

contact@wpscan.com — Exploit, Third Party Advisory, VDB Entry
contact@wpscan.com — Third Party Advisory
contact@wpscan.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory