Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse
CVE-2024-47772

6.1MEDIUM

Key Information:

Vendor
Discourse
Status
Discourse
Vendor
CVE Published:
7 October 2024

Summary

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.

Affected Version(s)

discourse stable: < 3.3.2 < stable: 3.3.2

discourse tests-passed: < 3.4.0.beta2 < tests-passed: 3.4.0.beta2

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM
https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

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