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.
References6
- github.com/alexjustesen/speedtest-tracker
- github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b…
- github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b…
- github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b…
- hackmd.io/@haind03/speedtest-tracker-trust-proxies-allowlist-by…
- www.vulncheck.com/advisories/speedtest-tracker-through-1.15.0-i…
Metrics
- CVSS 3.1
-
3.7
LOW
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 4.0
-
6.3
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 11 · as of 11 November 2026
- CWE
- CWE-348
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.