CVE-2024-47772

Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse

Description

Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users' browsers by sending a maliciously crafted chat message and replying to it. This issue only affects sites with CSP disabled. This problem is patched in the latest version of Discourse. All users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum. Users who do upgrade should also consider enabling a CSP as well as a proactive measure.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.13%
Vendor Advisory github.com
Affected: discourse discourse
Published at:
Updated at:

References

Link Tags
https://github.com/discourse/discourse/security/advisories/GHSA-67mh-xhmf-c56h vendor advisory
https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP mitigation third party advisory

Frequently Asked Questions

What is the severity of CVE-2024-47772?
CVE-2024-47772 has been scored as a medium severity vulnerability.
How to fix CVE-2024-47772?
To fix CVE-2024-47772, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-47772 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-47772 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-47772?
CVE-2024-47772 affects discourse discourse.
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