Vulnerability in Alexjustesen Speedtest-Tracker
CVE-2026-108736
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.
Published .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind03/speedtest-tracker-trust-proxies-allowlist-bypass (third-party-advisory)
- github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c391a50b80… (technical-description)
- github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c391a50b80… (technical-description)
- github.com/alexjustesen/speedtest-tracker/blob/fce6eb36181ed70b5b0763c391a50b80… (technical-description)
- github.com/alexjustesen/speedtest-tracker (product)
- www.vulncheck.com/advisories/speedtest-tracker-through-1.15.0-ip-allowlist-bypa… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108736?
- CVE-2026-108736 is a low-severity vulnerability in Alexjustesen Speedtest-Tracker, classified under CWE-348. CVSS score: 3.7/10. Published 2026-10-11.
- How severe is CVE-2026-108736?
- Low severity. CVSS v3 base score is 3.7 out of 10.