Vulnerability identifier: #VU47696

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
npm-user-validate
Web applications / Modules and components for CMS

Vendor: WP Upgrader

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when processing overly long input strings beginning with @ characters. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack (aka REDos vulnerability).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

npm-user-validate: 0.0.1 - 1.0.0

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External links
http://www.npmjs.com/advisories/1572
http://github.com/advisories/GHSA-xgh6-85xh-479p

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.