---
id: CVE-2026-108736
title: >-
  Speedtest Tracker through 1.15.0 contains an IP allowlist bypass vulnerability
  that allows unauthenticated remote attackers to evade ALLOWED_IPS and
  Prometheus allowlists by spoofing X-Forwarded-For headers
summary: >-
  Speedtest Tracker through 1.15.0 contains an IP allowlist bypass vulnerability
  that allows unauthenticated remote attackers to evade ALLOWED_IPS and
  Prometheus allowlists by spoofing X-Forwarded-For headers. Because
  bootstrap/app.php tru…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-348
published: '2026-10-11'
updated: '2026-10-11'
sourceUpdated: '2026-10-11T13:17:17.913'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108736'
references:
  - url: 'https://github.com/alexjustesen/speedtest-tracker'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c391a50b806d7e3da7/app/Http/Middleware/AllowedIpAddressesMiddleware.php#L16-L27
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c391a50b806d7e3da7/app/Http/Middleware/PrometheusAllowedIpMiddleware.php#L22-L42
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c391a50b806d7e3da7/bootstrap/app.php#L23-L41
    label: disclosure@vulncheck.com
  - url: >-
      https://hackmd.io/@haind03/speedtest-tracker-trust-proxies-allowlist-bypass
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/speedtest-tracker-through-1.15.0-ip-allowlist-bypass-via-x-forwarded-for-spoofing
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-11T13:51:17.033Z'
---

## Overview

Speedtest Tracker through 1.15.0 contains an IP allowlist bypass vulnerability that allows unauthenticated remote attackers to evade ALLOWED_IPS and Prometheus allowlists by spoofing X-Forwarded-For headers. Because bootstrap/app.php trusts every peer as a proxy, attackers can supply an allowlisted address to read /prometheus metrics and reach protected web and API endpoints.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.