CVE Catalog

CVE-2026-108736

LowCVSS 3.7
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

10th percentile - higher than 10% of all known CVEs

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 trusts every peer as a proxy, attackers can supply an allowlisted address to read /prometheus metrics and reach protected web and API endpoints.

Risk Assessment

The risk includes unauthorized access to metrics and protected functionality, potentially exposing infrastructure information or enabling further attacks. Bypassing the IP list compromises access control mechanisms.

Recommendation

Update Speedtest Tracker to a patched version and configure proxy trust only from trusted sources. Also consider using alternative authentication methods such as API keys.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS