CVE-2023-22468

high-risk
Published 2023-01-26

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.

Do I need to act?

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0.40% 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 8.8/10 High
NETWORK / LOW complexity

Affected Products (16)

Affected Vendors

Discourse

References (2)

Third Party Advisory https://github.com/discourse/discourse/security/advisories/GHSA-8mr2-xf8r-wr8m
Third Party Advisory https://github.com/discourse/discourse/security/advisories/GHSA-8mr2-xf8r-wr8m
50
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 2/34 · Minimal
Exposure 18/34 · Moderate