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CVE-2022-25839

Improper Input Validation

MEDIUM
5.3
CVSS Score
Published: March 11, 2022 at 08:00 PM UTC
Updated: June 17, 2026 at 04:34 AM UTC
1 product affected across 1 vendorUrl Js

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.8%

Description

The package url-js before 2.1.0 are vulnerable to Improper Input Validation due to improper parsing, which makes it is possible for the hostname to be spoofed. http://\\\\\\\\localhost and http://localhost are the same URL. However, the hostname is not parsed as localhost, and the backslash is reflected as it is.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Url Js· Url Js Projectnpm
95%
v < 2.1.0
Affected range stops below 2.1.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/duzun/URL.js/commit/9dc9fcc99baa4cbda24403d81a589e9b0f4121d0
x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JS-URLJS-2414030

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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