What is CVE-2026-15383?

CVE-2026-15383 is a medium-severity vulnerability in Blog Floating Button, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-03.

How severe is CVE-2026-15383?

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

XSS in Blog Floating Button

CVE-2026-15383

The Blog Floating Button WordPress plugin through 1.4.20 does not sanitize or escape the visitor User-Agent header, which it stores through an unauthenticated tracking REST endpoint and later renders unescaped in an administrator report pa…

Vulnerability class: XSS (Cross-Site Scripting)

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

Unknown Blog Floating Button — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-15383?: CVE-2026-15383 is a medium-severity vulnerability in Blog Floating Button, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-03.
How severe is CVE-2026-15383?: Medium severity. CVSS v3 base score is 6.1 out of 10.