SB2024073033 - Iframe injection in Discourse

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Neutralization of Special Elements in Output Used by a Downstream Component (CVE-ID: CVE-2024-39320)

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

CVSSv4: 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

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.

Remediation

Install update from vendor's website.

References

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