WordPress Social Warfare Plugin Cross-Site Scripting (XSS) Vulnerability

Added to KEV
2021-11-03
Federal due date
2022-05-03
Vendor
WordPress
Product
Social Warfare Plugin
EPSS
99.5th percentile (score 0.887, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2019-9978

CISA short description

WordPress Social Warfare plugin contains a cross-site scripting (XSS) vulnerability that allows for remote code execution. This vulnerability affects Social Warfare and Social Warfare Pro.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.