How severe is CVE-2026-0561?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Paultgoodchild Shield: Blocks Bots, Protects Users, And Prevents Security Breaches

CVE-2026-0561

The Shield Security plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'message' parameter in all versions up to, and including, 21.0.8 due to insufficient input sanitization and output escaping. This makes it pos…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (29.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Paultgoodchild Shield: Blocks Bots, Protects Users, And Prevents Security Breaches — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-0561?: CVE-2026-0561 is a medium-severity vulnerability in Paultgoodchild Shield: Blocks Bots, Protects Users, And Prevents Security Breaches, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-19.
How severe is CVE-2026-0561?: Medium severity. CVSS v3 base score is 6.1 out of 10.