XSS in Yoast Yoast_seo
CVE-2021-24153
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 wer…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.011 (62.0th 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
- Yoast Yoast_seo
- Unknown Yoast Seo — versions 3.4.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- contact@wpscan.com (x_refsource_CONFIRM, Third Party Advisory)
- contact@wpscan.com (Third Party Advisory, x_refsource_MISC)
- contact@wpscan.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-24153?
- CVE-2021-24153 is a medium-severity vulnerability in Yoast Yoast_seo, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-04-05.
- How severe is CVE-2021-24153?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2021-24153 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.