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CVE-2026-108736— Speedtest Tracker through 1.15.0 IP Allowlist Bypass via X-Forwarded-For Spoofing

Quick assessment

Affected
alexjustesen speedtest-tracker
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Speedtest Tracker 1.15.0 及之前版本存在一个 IP 白名单绕过漏洞，允许未经身份验证的远程攻击者通过伪造 X-Forwarded-For 请求头，绕过 ALLOWED_IPS 和 Prometheus 的 IP 白名单限制。由于 bootstrap/app.php 信任所有对等连接为代理，攻击者可以提供一个在白名单中的地址，从而读取 /prometheus 指标数据，并访问受保护的 Web 和 API 端点。

CVSS 3.7 · Low EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
alexjustesen speedtest-tracker ≤ 1.15.0 affected
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I. Basic Information for CVE-2026-108736

Vulnerability Information
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Vulnerability Title
Speedtest Tracker through 1.15.0 IP Allowlist Bypass via X-Forwarded-For Spoofing
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用不可信的源
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
alexjustesen speedtest-tracker 0 ~ 1.15.0 -

II. Public POCs for CVE-2026-108736

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-108736

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Vendor Advisories for CVE-2026-108736 (1)

Proof of Concept for CVE-2026-108736 (1)

Other References for CVE-2026-108736 (1)

IV. Related Vulnerabilities

Same weakness: CWE-348

V. Comments for CVE-2026-108736

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