Description
Impact
Whitespace characters are not removed from the beginning of the protocol, so URLs are not parsed properly and protocol validation mechanisms may fail.
Patches
Patched in 1.19.9
Workarounds
Remove leading whitespace from values before passing them to URI.parse (e.g. via .href(value) or new URI(value)), e.g. by using
function remove_whitespace(url){
const whitespace = /^[\x00-\x20\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff]+/;
url = url.replace(whitespace, '')
return url
}
References
- https://huntr.dev/bounties/82ef23b8-7025-49c9-b5fc-1bb9885788e5/
For more information
If you have any questions or comments about this advisory:
* Open an issue in medialize/URI.js
Basic information
- Type
- reviewed
- Severity
- medium
- Advisory on GitHub
- Open advisory ↗
- Repository advisory
- Open repository advisory ↗
- Source code
- Browse source ↗
- Published (advisory)
- 2022-03-03 19:23:36 UTC
- Updated
- 2023-02-03 05:06:21 UTC
- GitHub reviewed
- 2022-03-03 19:23:36 UTC
- NVD published
- 2022-03-03
EPSS Score
| Score |
Percentile |
|
0.49%
|
65.52% |
CVSS Scores
| Base score |
Version |
Severity |
Vector |
|
5.3
|
3.1 |
—
|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Click to expand
- Attack vector (AV:N)
- Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
- Attack complexity (AC:L)
- Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
- Privileges required (PR:N)
- No account or special rights needed—anonymous or random user is enough.
- User interaction (UI:N)
- Nobody has to click “OK” or open a trap file; it can work without a victim helping.
- Scope (S:U)
- Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
- Confidentiality (C:N)
- Doesn’t really leak secrets in a meaningful way.
- Integrity (I:L)
- Attackers could change some data, but it’s limited—not everything goes.
- Availability (A:N)
- Service keeps running; no real outage angle.
|
CWEs
| CWE id |
Name |
|
CWE-20
|
Improper Input Validation |
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
| Ecosystem |
Package |
Vulnerable range |
First patched |
Vulnerable functions |
| npm |
urijs |
< 1.19.9 |
1.19.9 |
—
|
cvelogic
Threat Intelligence