CVE-2023-22454

Discourse vulnerable to Cross-site Scripting through pending post titles descriptions

Description

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.

Category

8.0
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.10%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: discourse discourse
Published at:
Updated at:

References

Link Tags
https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462 third party advisory
https://github.com/discourse/discourse/commit/c0e2d7badac276d82a4056a994b48d68a8993a12 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2023-22454?
CVE-2023-22454 has been scored as a high severity vulnerability.
How to fix CVE-2023-22454?
To fix CVE-2023-22454, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-22454 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-22454 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-22454?
CVE-2023-22454 affects discourse discourse.
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