Iframe injection in Discourse



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-39320
CWE-ID CWE-74
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Discourse
Web applications / Forum & blogging software

Vendor Civilized Discourse Construction Kit, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Neutralization of Special Elements in Output Used by a Downstream Component

EUVDB-ID: #VU94855

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-39320

CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Exploit availability: No

Description

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

The vulnerability exists due to iframe injection though default site setting. A remote attacker can inject iframes from any domain.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Discourse: before 3.2.2 beta

CPE2.3 External links

https://github.com/discourse/discourse/security/advisories/GHSA-4p82-xh38-gq4p


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.



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