Vulnerability identifier: #VU78758

Vulnerability risk: Low

CVSSv3.1: 2.3 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-37904

CWE-ID: CWE-362

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Discourse
Web applications / Forum & blogging software

Vendor: Civilized Discourse Construction Kit, Inc.

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a race condition in Accept Invite. A remote user can exploit the race and create more users than permitted from invite links.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Discourse: 3.0.5 - 3.1.0 beta6

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External links
http://github.com/discourse/discourse/commit/62a609ea2d0645a27ee8adbb01ce10a5e03a600b
http://github.com/discourse/discourse/security/advisories/GHSA-6wj5-4ph2-c7qg

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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