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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 6
https://github.com/alexjustesen/speedtest-tracker
disclosure@vulncheck.com
https://github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c3…
disclosure@vulncheck.com
https://github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c3…
disclosure@vulncheck.com
https://github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c3…
disclosure@vulncheck.com
https://hackmd.io/@haind03/speedtest-tracker-trust-proxies-allowlist-bypass
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/speedtest-tracker-through-1.15.0-ip-allowl…
disclosure@vulncheck.com