Medium severity · published Jan 5, 2023
CVE-2023-22454
Discourse is an option source discussion platform
6.1
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
Discourse · Discourse
before 2.8.14; 1.1.0; 1.1.0; 1.1.0; 1.1.0; 1.1.0; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-22454
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-22454
Patch
https://github.com/discourse/discourse/commit/c0e2d7badac276d82a4056a994b48d68a8993a12
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462
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