Medium (6.1) in getshieldsecurity shield security. EPSS 93% chance of exploitation in the next 30 days.
The Shield Security plugin for WordPress is vulnerable to stored Cross-Site Scripting in versions up to, and including, 17.0.17 via the 'User-Agent' header. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Severity
CVSS 3.1
6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
93% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)