URI.js is a javascript URL mutation library (npm package urijs). In URI.js before version 1.19.4, the hostname can be spoofed by using a backslash (`\`) character followed by an at (`@`) character. If the hostname is used in security decisions, the decision may be incorrect. Depending on library usage and attacker intent, impacts may include allow/block list bypasses, SSRF attacks, open redirects, or other undesired behavior. For example the URL `https://expected-example.com\@observed-example.com` will incorrectly return `observed-example.com` if using an affected version. Patched versions correctly return `expected-example.com`. Patched versions match the behavior of other parsers which implement the WHATWG URL specification, including web browsers and Node's built-in URL class. Version 1.19.4 is patched against all known payload variants. Version 1.19.3 has a partial patch but is still vulnerable to a payload variant.]
Advisories
Source ID Title
EUVD EUVD EUVD-2020-1476 URI.js is a javascript URL mutation library (npm package urijs). In URI.js before version 1.19.4, the hostname can be spoofed by using a backslash (`\`) character followed by an at (`@`) character. If the hostname is used in security decisions, the decision may be incorrect. Depending on library usage and attacker intent, impacts may include allow/block list bypasses, SSRF attacks, open redirects, or other undesired behavior. For example the URL `https://expected-example.com\@observed-example.com` will incorrectly return `observed-example.com` if using an affected version. Patched versions correctly return `expected-example.com`. Patched versions match the behavior of other parsers which implement the WHATWG URL specification, including web browsers and Node's built-in URL class. Version 1.19.4 is patched against all known payload variants. Version 1.19.3 has a partial patch but is still vulnerable to a payload variant.]
Github GHSA Github GHSA GHSA-3329-pjwv-fjpg Hostname spoofing via backslashes in URL
Fixes

Solution

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Workaround

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-04T15:56:03.814Z

Reserved: 2020-10-01T00:00:00

Link: CVE-2020-26291

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-12-31T00:15:12.327

Modified: 2024-11-21T05:19:46.683

Link: CVE-2020-26291

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-12-31T00:00:00Z

Links: CVE-2020-26291 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses