Medium severity · published Jan 26, 2023
CVE-2023-22468
Discourse is an open source platform for community discussion
5.4
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
Discourse · Discourse
before 2.8.13; 2.9.0; 2.9.0; 2.9.0; 2.9.0; 2.9.0; +10 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-22468
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-22468
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-8mr2-xf8r-wr8m
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