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Vulnerabilities CVE-2026-15383

CVE-2026-15383

None
Open
TLP:CLEAR

Blog Floating Button <= 1.4.20 - Unauthenticated Stored XSS via User-Agent Header

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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.

Details

EPSS Score
0.16%

5.8th percentile

Confidence
90%
Published
Aug 3, 2026
Last Modified
Aug 3, 2026
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