CVE-2023-28440: Denial of service via admin theme import route in Discourse

Published Apr 18, 2023
·
Updated

Discourse is an open source platform for community discussion. In affected versions a maliciously crafted request from a Discourse administrator can lead to a long-running request and eventual timeout. This has the greatest potential impact in shared hosting environments where admins are untrusted. This issue has been addressed in versions 3.0.3 and 3.1.0.beta4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected Software

210 affected components
Discourse Discourse<3.0.3
Discourse Discourse=1.1.0-beta1
Discourse Discourse=1.1.0-beta2
Discourse Discourse=1.1.0-beta3
Discourse Discourse=1.1.0-beta4
Discourse Discourse=1.1.0-beta5
Discourse Discourse=1.1.0-beta6
Discourse Discourse=1.1.0-beta6b
Discourse Discourse=1.1.0-beta7
Discourse Discourse=1.1.0-beta8
Discourse Discourse=1.2.0-beta1
Discourse Discourse=1.2.0-beta2
Discourse Discourse=1.2.0-beta3
Discourse Discourse=1.2.0-beta4
Discourse Discourse=1.2.0-beta5
Discourse Discourse=1.2.0-beta6
Discourse Discourse=1.2.0-beta7
Discourse Discourse=1.2.0-beta8
Discourse Discourse=1.2.0-beta9
Discourse Discourse=1.3.0-beta1
Discourse Discourse=1.3.0-beta10
Discourse Discourse=1.3.0-beta11
Discourse Discourse=1.3.0-beta2
Discourse Discourse=1.3.0-beta3
Discourse Discourse=1.3.0-beta4
Discourse Discourse=1.3.0-beta5
Discourse Discourse=1.3.0-beta6
Discourse Discourse=1.3.0-beta7
Discourse Discourse=1.3.0-beta8
Discourse Discourse=1.3.0-beta9
Discourse Discourse=1.4.0-beta1
Discourse Discourse=1.4.0-beta10
Discourse Discourse=1.4.0-beta11
Discourse Discourse=1.4.0-beta12
Discourse Discourse=1.4.0-beta2
Discourse Discourse=1.4.0-beta3
Discourse Discourse=1.4.0-beta4
Discourse Discourse=1.4.0-beta5
Discourse Discourse=1.4.0-beta6
Discourse Discourse=1.4.0-beta7
Discourse Discourse=1.4.0-beta8
Discourse Discourse=1.4.0-beta9
Discourse Discourse=1.5.0-beta1
Discourse Discourse=1.5.0-beta10
Discourse Discourse=1.5.0-beta11
Discourse Discourse=1.5.0-beta12
Discourse Discourse=1.5.0-beta13
Discourse Discourse=1.5.0-beta13b
Discourse Discourse=1.5.0-beta14
Discourse Discourse=1.5.0-beta2
Discourse Discourse=1.5.0-beta3
Discourse Discourse=1.5.0-beta4
Discourse Discourse=1.5.0-beta5
Discourse Discourse=1.5.0-beta6
Discourse Discourse=1.5.0-beta7
Discourse Discourse=1.5.0-beta8
Discourse Discourse=1.5.0-beta9
Discourse Discourse=1.6.0-beta1
Discourse Discourse=1.6.0-beta10
Discourse Discourse=1.6.0-beta11
Discourse Discourse=1.6.0-beta12
Discourse Discourse=1.6.0-beta2
Discourse Discourse=1.6.0-beta3
Discourse Discourse=1.6.0-beta4
Discourse Discourse=1.6.0-beta5
Discourse Discourse=1.6.0-beta6
Discourse Discourse=1.6.0-beta7
Discourse Discourse=1.6.0-beta8
Discourse Discourse=1.6.0-beta9
Discourse Discourse=1.7.0-beta1
Discourse Discourse=1.7.0-beta10
Discourse Discourse=1.7.0-beta11
Discourse Discourse=1.7.0-beta2
Discourse Discourse=1.7.0-beta3
Discourse Discourse=1.7.0-beta4
Discourse Discourse=1.7.0-beta5
Discourse Discourse=1.7.0-beta6
Discourse Discourse=1.7.0-beta7
Discourse Discourse=1.7.0-beta8
Discourse Discourse=1.7.0-beta9
Discourse Discourse=1.8.0-beta1
Discourse Discourse=1.8.0-beta10
Discourse Discourse=1.8.0-beta11
Discourse Discourse=1.8.0-beta12
Discourse Discourse=1.8.0-beta13
Discourse Discourse=1.8.0-beta2
Discourse Discourse=1.8.0-beta3
Discourse Discourse=1.8.0-beta4
Discourse Discourse=1.8.0-beta5
Discourse Discourse=1.8.0-beta6
Discourse Discourse=1.8.0-beta7
Discourse Discourse=1.8.0-beta8
Discourse Discourse=1.8.0-beta9
Discourse Discourse=1.9.0-beta1
Discourse Discourse=1.9.0-beta10
Discourse Discourse=1.9.0-beta11
Discourse Discourse=1.9.0-beta12
Discourse Discourse=1.9.0-beta13
Discourse Discourse=1.9.0-beta14
Discourse Discourse=1.9.0-beta15
Discourse Discourse=1.9.0-beta16
Discourse Discourse=1.9.0-beta17
Discourse Discourse=1.9.0-beta2
Discourse Discourse=1.9.0-beta3
Discourse Discourse=1.9.0-beta4
Discourse Discourse=1.9.0-beta5
Discourse Discourse=1.9.0-beta6
Discourse Discourse=1.9.0-beta7
Discourse Discourse=1.9.0-beta8
Discourse Discourse=1.9.0-beta9
Discourse Discourse=2.0.0-beta1
Discourse Discourse=2.0.0-beta10
Discourse Discourse=2.0.0-beta2
Discourse Discourse=2.0.0-beta3
Discourse Discourse=2.0.0-beta4
Discourse Discourse=2.0.0-beta5
Discourse Discourse=2.0.0-beta6
Discourse Discourse=2.0.0-beta7
Discourse Discourse=2.0.0-beta8
Discourse Discourse=2.0.0-beta9
Discourse Discourse=2.1.0-beta1
Discourse Discourse=2.1.0-beta2
Discourse Discourse=2.1.0-beta3
Discourse Discourse=2.1.0-beta4
Discourse Discourse=2.1.0-beta5
Discourse Discourse=2.1.0-beta6
Discourse Discourse=2.2.0-beta1
Discourse Discourse=2.2.0-beta10
Discourse Discourse=2.2.0-beta2
Discourse Discourse=2.2.0-beta3
Discourse Discourse=2.2.0-beta4
Discourse Discourse=2.2.0-beta5
Discourse Discourse=2.2.0-beta6
Discourse Discourse=2.2.0-beta7
Discourse Discourse=2.2.0-beta8
Discourse Discourse=2.2.0-beta9
Discourse Discourse=2.3.0-beta1
Discourse Discourse=2.3.0-beta10
Discourse Discourse=2.3.0-beta11
Discourse Discourse=2.3.0-beta2
Discourse Discourse=2.3.0-beta3
Discourse Discourse=2.3.0-beta4
Discourse Discourse=2.3.0-beta5
Discourse Discourse=2.3.0-beta6
Discourse Discourse=2.3.0-beta7
Discourse Discourse=2.3.0-beta8
Discourse Discourse=2.3.0-beta9
Discourse Discourse=2.4.0-beta1
Discourse Discourse=2.4.0-beta10
Discourse Discourse=2.4.0-beta11
Discourse Discourse=2.4.0-beta2
Discourse Discourse=2.4.0-beta3
Discourse Discourse=2.4.0-beta4
Discourse Discourse=2.4.0-beta5
Discourse Discourse=2.4.0-beta6
Discourse Discourse=2.4.0-beta7
Discourse Discourse=2.4.0-beta8
Discourse Discourse=2.4.0-beta9
Discourse Discourse=2.5.0-beta1
Discourse Discourse=2.5.0-beta2
Discourse Discourse=2.5.0-beta3
Discourse Discourse=2.5.0-beta4
Discourse Discourse=2.5.0-beta5
Discourse Discourse=2.5.0-beta6
Discourse Discourse=2.5.0-beta7
Discourse Discourse=2.6.0-beta1
Discourse Discourse=2.6.0-beta2
Discourse Discourse=2.6.0-beta3
Discourse Discourse=2.6.0-beta4
Discourse Discourse=2.6.0-beta5
Discourse Discourse=2.6.0-beta6
Discourse Discourse=2.7.0-beta1
Discourse Discourse=2.7.0-beta2
Discourse Discourse=2.7.0-beta3
Discourse Discourse=2.7.0-beta4
Discourse Discourse=2.7.0-beta5
Discourse Discourse=2.7.0-beta6
Discourse Discourse=2.7.0-beta7
Discourse Discourse=2.7.0-beta8
Discourse Discourse=2.7.0-beta9
Discourse Discourse=2.8.0-beta1
Discourse Discourse=2.8.0-beta10
Discourse Discourse=2.8.0-beta11
Discourse Discourse=2.8.0-beta2
Discourse Discourse=2.8.0-beta3
Discourse Discourse=2.8.0-beta4
Discourse Discourse=2.8.0-beta5
Discourse Discourse=2.8.0-beta6
Discourse Discourse=2.8.0-beta7
Discourse Discourse=2.8.0-beta8
Discourse Discourse=2.8.0-beta9
Discourse Discourse=2.9.0-beta1
Discourse Discourse=2.9.0-beta10
Discourse Discourse=2.9.0-beta11
Discourse Discourse=2.9.0-beta12
Discourse Discourse=2.9.0-beta13
Discourse Discourse=2.9.0-beta14
Discourse Discourse=2.9.0-beta2
Discourse Discourse=2.9.0-beta3
Discourse Discourse=2.9.0-beta4
Discourse Discourse=2.9.0-beta5
Discourse Discourse=2.9.0-beta6
Discourse Discourse=2.9.0-beta7
Discourse Discourse=2.9.0-beta8
Discourse Discourse=2.9.0-beta9
Discourse Discourse=3.0.0-beta15
Discourse Discourse=3.0.0-beta16
Discourse Discourse=3.1.0-beta1
Discourse Discourse=3.1.0-beta2
Discourse Discourse=3.1.0-beta3

Event History

Apr 18, 2023
CVE Published
via MITRE·08:40 PM
Data Sourced
via MITRE·08:40 PM
DescriptionSeverityWeakness

Frequently Asked Questions

1

What is the severity of CVE-2023-28440?

The severity of CVE-2023-28440 is considered moderate, primarily affecting Discourse administrators.

2

How do I fix CVE-2023-28440?

To fix CVE-2023-28440, update your Discourse installation to version 3.0.4 or later.

3

What are the affected versions of Discourse for CVE-2023-28440?

Affected versions of Discourse for CVE-2023-28440 include all versions prior to 3.0.4.

4

Could shared hosting environments be at risk due to CVE-2023-28440?

Yes, shared hosting environments are particularly at risk due to the exploitability of this vulnerability.

5

What type of vulnerability is CVE-2023-28440?

CVE-2023-28440 is a denial-of-service vulnerability related to long-running requests from administrators.

Company

Resources

Contact

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