CVE-2026-7634CWE-79

SlimStat Analytics <= 5.4.11 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header

High · published May 28, 2026

CVSS v3.1
7.2
EPSS
1%
Percentile
43.8
In the wild
Unconfirmed
What it is

The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'User-Agent' header in all versions up to, and including, 5.4.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The show_complete_user_agent_tooltip setting must be explicitly enabled by an administrator (disabled by default) for the stored payload to be rendered and executed.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00527 · 43.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-05-28T06:45Z
EPSS history
Timeline
  • 28 MAY 06:45Z
    SlimStat Analytics <= 5.4.11 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header
    cvelistv5