Discourse BBCode plugin vulnerable to arbitrary CSS injection
CVE-2022-46162

8.8HIGH

Key Information:

Vendor
Discourse
Status
Discourse-bbcode
Vendor
CVE Published:
30 November 2022

Summary

discourse-bbcode is the official BBCode plugin for Discourse. Prior to commit 91478f5, CSS injection can occur when rendering content generated with the discourse-bccode plugin. This vulnerability only affects sites which have the discourse-bbcode plugin installed and enabled. This issue is patched in commit 91478f5. As a workaround, ensure that the Content Security Policy is enabled and monitor any posts that contain bbcode.

Affected Version(s)

discourse-bbcode < 91478f5cfecdcc43cf85b997168a8ecfd0f8df90

References

https://github.com/discourse/discourse-bbcode/security/ad...
https://github.com/discourse/discourse-bbcode/commit/9147...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.