CVE-2026-15383: Blog Floating Button (WordPress plugin) · Cross-Site Scripting (XSS)
Affects Blog Floating Button (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 6.1 Medium.
Data as of 1 Nov 2026, 22:58 UTC
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Blog Floating Button | Affected
| 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.