What is CVE-2018-3771?

CVE-2018-3771 is a medium-severity vulnerability in HackerOne Statics-Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-20.

How severe is CVE-2018-3771?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in HackerOne Statics-Server

CVE-2018-3771

An XSS in statics-server <= 0.0.9 can be used via injected iframe in the filename when statics-server displays directory index in the browser.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-07-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

HackerOne Statics-Server — versions 0.0.9
Statics-Server Project

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

hackerone.com/reports/355458 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-3771?: CVE-2018-3771 is a medium-severity vulnerability in HackerOne Statics-Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-20.
How severe is CVE-2018-3771?: Medium severity. CVSS v3 base score is 6.1 out of 10.