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VulnerabilityPublished

CVE-2026-15383: Blog Floating Button (WordPress plugin) · Cross-Site Scripting (XSS)

Affects Blog Floating Button (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 6.1 Medium.

Data as of 1 Nov 2026, 22:58 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Blog Floating ButtonAffected
  • <=1.4.20
Fixed in–

AI-suggested

Until a fix is available, administrators should avoid viewing the affected report page or restrict access to trusted users only. Monitor official vendor channels for updates and apply patches promptly once released.

Description

CVE-2026-15383 is a Cross-Site Scripting (XSS) vulnerability in the Blog Floating Button WordPress plugin up to version 1.4.20. The plugin fails to sanitize or escape the visitor User-Agent header, which is stored via an unauthenticated tracking REST endpoint and later rendered unescaped in an administrator report page. This allows an unauthenticated attacker to inject malicious scripts that execute in the context of any administrator viewing the report, potentially leading to site takeover.

References

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