Arbitrary JavaScript Execution Vulnerability Affects Discourse Sites Without CSP
CVE-2024-35234

6.1MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
3 July 2024

What is CVE-2024-35234?

Discourse is an open-source discussion platform. Prior to version 3.2.3 on the stable branch and version 3.3.0.beta3 on the tests-passed branch, an attacker can execute arbitrary JavaScript on users’ browsers by posting a specific URL containing maliciously crafted meta tags. This issue only affects sites with Content Security Polic (CSP) disabled. The problem has been patched in version 3.2.3 on the stable branch and version 3.3.0.beta3 on the tests-passed branch. As a workaround, ensure CSP is enabled on the forum.

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References

https://github.com/discourse/discourse/security/advisorie...
https://github.com/discourse/discourse/commit/26aef0c2888...
https://github.com/discourse/discourse/commit/311b737c910...

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

JSON
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