CVE-2023-22454
high-risk
Published 2023-01-05
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.
Do I need to act?
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0.29% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.0/10
High
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (4)
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462
62
/ 100
high-risk
Severity
28/34 · Critical
Exploitability
1/34 · Minimal
Exposure
33/34 · Critical