CVE-2024-56328: HTMLi(XSS without CSP) via Onebox urls in Discourse
Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users' browsers by posting a maliciously crafted onebox url. This issue only affects sites with CSP disabled. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade should enable CSP, disable inline Oneboxes globally, or allow specific domains for Oneboxing.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-56328?
CVE-2024-56328 has been classified as a high severity vulnerability due to the potential for arbitrary JavaScript execution on users' browsers.
How do I fix CVE-2024-56328?
To mitigate CVE-2024-56328, ensure that you update to the latest version of Discourse where the issue has been patched.
Who is affected by CVE-2024-56328?
Sites running Discourse with Content Security Policy (CSP) disabled are vulnerable to CVE-2024-56328.
What is the impact of CVE-2024-56328?
An attacker exploiting CVE-2024-56328 can execute malicious JavaScript on the browsers of users visiting an affected Discourse site.
Can I still use Discourse if I have CVE-2024-56328?
It is recommended to enable CSP or update to the latest Discourse version to safely use the platform and avoid CVE-2024-56328.