CVE-2023-22454: Discourse vulnerable to Cross-site Scripting through pending post titles descriptions

Published Jan 5, 2023
·
Updated

Discourse is an option source discussion platform. Prior to version 2.8.14 on the stable branch and version 3.0.0.beta16 on the beta and tests-passed branches, pending post titles can be used for cross-site scripting attacks. Pending posts can be created by unprivileged users when a category has the "require moderator approval of all new topics" setting set. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. A patch is available in versions 2.8.14 and 3.0.0.beta16.

Affected Software

206 affected components
Discourse Discourse<2.8.14
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

Remediation

Patch Available

https://github.com/discourse/discourse/commit/c0e2d7badac276d82a4056a994b48d68a8993a12

Event History

Jan 5, 2023
CVE Published
via MITRE·07:58 PM
Data Sourced
via MITRE·07:58 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2023-22454?

CVE-2023-22454 is classified as a medium severity vulnerability due to its potential for cross-site scripting attacks.

2

How do I fix CVE-2023-22454?

To fix CVE-2023-22454, upgrade Discourse to version 2.8.14 or later on the stable branch, or 3.0.0.beta16 or later on the beta and tests-passed branches.

3

What versions of Discourse are affected by CVE-2023-22454?

CVE-2023-22454 affects Discourse versions prior to 2.8.14 on the stable branch and 3.0.0.beta16 on the beta and tests-passed branches.

4

What type of attack is possible with CVE-2023-22454?

CVE-2023-22454 allows for cross-site scripting (XSS) attacks via unprivileged users creating malicious pending post titles.

5

Can unprivileged users exploit CVE-2023-22454?

Yes, unprivileged users can exploit CVE-2023-22454 by creating pending posts with malicious titles that may lead to XSS vulnerabilities.

Company

Resources

Contact

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