What is CVE-2019-13478?

CVE-2019-13478 is a critical-severity vulnerability in Yoast Yoast_seo, classified under Cross-site Scripting. CVSS score: 9.8/10. Published 2019-07-09.

How severe is CVE-2019-13478?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-13478 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Yoast Yoast_seo

CVE-2019-13478

The Yoast SEO plugin before 11.6-RC5 for WordPress does not properly restrict unfiltered HTML in term descriptions.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.033 (87.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Yoast Yoast_seo — versions 11.6
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC, Release Notes)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-13478?: CVE-2019-13478 is a critical-severity vulnerability in Yoast Yoast_seo, classified under Cross-site Scripting. CVSS score: 9.8/10. Published 2019-07-09.
How severe is CVE-2019-13478?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-13478 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.