Vulnerability identifier: #VU70573

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NodeBB
Web applications / Forum & blogging software

Vendor: NodeBB

Description

The vulnerability allows a remote attacker to execute arbitrary JavaScript code.

The vulnerability exists due to improper input validation within socket.io/index.js. A remote attacker can send a specially crafted request and perform a prototype pollution attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NodeBB: 2.0.0 - 2.8.0

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External links
http://github.com/NodeBB/NodeBB/releases/tag/v2.8.1
http://github.com/NodeBB/NodeBB/commit/586eed1407a78a1c1ec3af9bef3866104d3ef7cd

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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.