CVE-2020-26291: Hostname spoofing in URI.js
First published: Wed Dec 30 2020(Updated: )
A flaw was found in urijs. 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.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Uri.js Project Uri.js | <1.19.4 |
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Reference Links
- https://github.com/medialize/URI.js/commit/b02bf037c99ac9316b77ff8bfd840e90becf1155
- https://github.com/medialize/URI.js/releases/tag/v1.19.4
- https://github.com/medialize/URI.js/security/advisories/GHSA-3329-pjwv-fjpg
- https://www.npmjs.com/package/urijs
- https://expected-example.com\@observed-example.com
- https://access.redhat.com/errata/RHSA-2021:3917
- https://access.redhat.com/security/cve/cve-2020-26291
- https://bugzilla.redhat.com/show_bug.cgi?id=1915257
- https://www.cve.org/CVERecord?id=CVE-2020-26291 https://nvd.nist.gov/vuln/detail/CVE-2020-26291 https://github.com/medialize/URI.js/commit/b02bf037c99ac9316b77ff8bfd840e90becf1155 https://github.com/medialize/URI.js/releases/tag/v1.19.4 https://github.com/medialize/URI.js/security/advisories/GHSA-3329-pjwv-fjpg https://www.npmjs.com/package/urijs
Frequently Asked Questions
What is the vulnerability ID for this flaw in urijs?
The vulnerability ID for this flaw in urijs is CVE-2020-26291.
What is the severity of CVE-2020-26291?
The severity of CVE-2020-26291 is medium with a CVSS score of 6.5.
How does the vulnerability in urijs allow hostname spoofing?
The vulnerability in urijs allows hostname spoofing by using a backslash (`\`) character followed by an at (`@`) character.
What is the affected software version of urijs?
The affected software version of urijs is version 1.19.4 and prior.
How can I fix the vulnerability in urijs?
To fix the vulnerability in urijs, update to version 1.19.4.
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