EPSS
Percentile
36.1%
Zope Products.CMFCore before 2.5.1 and Products.PluggableAuthService before 2.6.2, as used in Plone through 5.2.4 and other products, allow Reflected XSS.
www.openwall.com/lists/oss-security/2021/05/22/1
nvd.nist.gov/vuln/detail/CVE-2021-33507
plone.org/security/hotfix/20210518/reflected-xss-in-various-spots