The gregs-high-performance-seo plugin before 1.6.2 for WordPress has XSS in the context of an old browser.
https://wordpress.org/plugins/gregs-high-performance-seo/#developers
Source: Mitre, NVD
Published: 2019-08-20
Updated: 2019-08-22
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.0019