CVE-2026-15383
Blog Floating Button <= 1.4.20 - Unauthenticated Stored XSS via User-Agent Header
MEDIUM 6.1EPSS 0.3%
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 page. This allows an unauthenticated attacker to store a malicious script that executes in the session of any administrator who views the access report, leading to site takeover.
- Affected
- Blog Floating Button
- CVSS v3.1 CNA
- 6.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS
- 0.27% chance of exploitation in the next 30 days, 19th percentile
- Published
- 2026-08-03