CVE-2018-3771
statics-server Cross-site Scripting vulnerability
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2018-3771- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2018-3771- Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2022-2146 No score
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.
- Record
EUVD-2022-2146- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-393x-fr59-r8fg
statics-server Cross-site Scripting vulnerability
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. Statics-server does not implement any HTML escaping when displays directory index in the browser. Variable v is used in <a href> element without escaping, which allows to embed HTML <iframe> tag with src attribute points to another HTML file in the directory. This file can contain malicious JavaScript code, which will be executed:
// ./node_modules/statics-server/index.js, line 18:
if(fs.lstatSync(staticPath).isDirectory()){
var files=fs.readdirSync(staticPath);
var lis='';
files.forEach((v,i)=>{
if(fs.lstatSync(path.resolve(staticPath,v)).isDirectory()){
lis+=`<li><a href="${req.url}${v}/">${v}/</a></li>`;
}else {
lis+=`<li><a href="${req.url}${v}">${v}</a></li>`
}
});
(...)
- Record
GHSA-393x-fr59-r8fg- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-393x-fr59-r8fg
statics-server Cross-site Scripting vulnerability
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. Statics-server does not implement any HTML escaping when displays directory index in the browser. Variable v is used in <a href> element without escaping, which allows to embed HTML <iframe> tag with src attribute points to another HTML file in the directory. This file can contain malicious JavaScript code, which will be executed:
// ./node_modules/statics-server/index.js, line 18:
if(fs.lstatSync(staticPath).isDirectory()){
var files=fs.readdirSync(staticPath);
var lis='';
files.forEach((v,i)=>{
if(fs.lstatSync(path.resolve(staticPath,v)).isDirectory()){
lis+=`<li><a href="${req.url}${v}/">${v}/</a></li>`;
}else {
lis+=`<li><a href="${req.url}${v}">${v}</a></li>`
}
});
(...)
- Record
GHSA-393x-fr59-r8fg- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
statics-servernpm |
through 0.0.9 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-3771 is a medium vulnerability (CVSS 6.1) in Hackerone Statics-server, published July 20, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.93%, the 60th percentile. No source names a fixed version.