CVE-2022-25839

Name: CVE-2022-25839
Creator: NVD / NIST
Published: 2022-03-11T20:15:09.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.84%

Last modified Jun 17, 2026

CVE-2022-25839 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.84%

53.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Url-Js Project	Url-Js	< 2.1.0

References

https://github.com/duzun/URL.js/commit/9dc9fcc99baa4cbda24403d81a589e9b0f4121d0Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-URLJS-2414030Exploit, Patch, Third Party Advisory
https://github.com/duzun/URL.js/commit/9dc9fcc99baa4cbda24403d81a589e9b0f4121d0Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-URLJS-2414030Exploit, Patch, Third Party Advisory

Timeline

Published: Mar 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-25839?

How severe is CVE-2022-25839?

CVE-2022-25839 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2022-25839?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-25839?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST