CVE-2026-12592

SlimStat Analytics < 5.5.0 - Unauthenticated Stored XSS via CF-IPCountry Header

High · published July 20, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
27.7
In the wild
Unconfirmed
What it is

The SlimStat Analytics WordPress plugin before 5.5.0 does not escape a visitor-controlled geolocation value before outputting it in its admin analytics reports, allowing unauthenticated visitors to store a cross-site scripting payload that executes in the browser of an administrator who views the reports. Exploitation requires the SlimStat Analytics WordPress plugin before 5.5.0 to be configured to use the Cloudflare geolocation provider.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00352 · 27.7th percentile
Published
2026-07-20T06:00Z
EPSS history
Timeline
  • 20 JUL 06:00Z
    SlimStat Analytics < 5.5.0 - Unauthenticated Stored XSS via CF-IPCountry Header
    cvelistv5