Discourse allows self-XSS through malicious composer message
CVE-2022-46148

7.1HIGH

Key Information:

Vendor
Discourse
Status
Discourse
Vendor
CVE Published:
29 November 2022

Summary

Discourse is an open-source messaging platform. In versions 2.8.10 and prior on the stable branch and versions 2.9.0.beta11 and prior on the beta and tests-passed branches, users composing malicious messages and navigating to drafts page could self-XSS. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.

Affected Version(s)

discourse <= 2.8.10 <= 2.8.10

discourse >= 2.9.0.beta1, <= 2.9.0.beta11 <= 2.9.0.beta1, 2.9.0.beta11

References

https://github.com/discourse/discourse/security/advisorie...

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.