CVE-2026-15383
Blog Floating Button <= 1.4.20 - Unauthenticated Stored XSS via User-Agent Header
- State
- Published
- Severity
- 6.1 Medium
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Reserved
- Jul 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | CISA-ADP |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Blog Floating ButtonUnknown |
|
References
- https://wpscan.com/vulnerability/45e5d74e-6f7b-499b-ae25-74fe1bc8d18d/exploitvdb-entrytechnical-description
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