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CVE-2026-15383

MEDIUM 6.1 CVSS 3.1
Published
August 3, 2026
Last modified
August 26, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Blog Floating Button — Up to and including 1.4.20

References

  • wpscan.com https://wpscan.com/vulnerability/45e5d74e-6f7b-499b-ae25-74fe1bc8d18d/
  • nvd.nist.gov Official NVD record