CVE-2023-22468

Discourse vulnerable to Cross-site Scripting in local oneboxes

Description

Discourse is an open source platform for community discussion. Versions prior to 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed), are vulnerable to cross-site Scripting. A maliciously crafted URL can be included in a post to carry out cross-site scripting attacks on sites with disabled or overly permissive CSP (Content Security Policy). Discourse's default CSP prevents this vulnerability. This vulnerability is patched in versions 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed). As a workaround, enable and/or restore your site's CSP to the default one provided with Discourse.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.27%
Third-Party Advisory github.com
Affected: discourse discourse
Published at:
Updated at:

References

Link Tags
https://github.com/discourse/discourse/security/advisories/GHSA-8mr2-xf8r-wr8m third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-22468?
CVE-2023-22468 has been scored as a high severity vulnerability.
How to fix CVE-2023-22468?
To fix CVE-2023-22468, 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-2023-22468 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-22468 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-2023-22468?
CVE-2023-22468 affects discourse discourse.
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