High severity · published Jan 12, 2024
CVE-2023-48297
Discourse vulnerable to unlimited mentioned users in message serializer
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
Discourse is a platform for community discussion. The message serializer uses the full list of expanded chat mentions (@all and @here) which can lead to a very long array of users. This issue was patched in versions 3.1.4 and beta 3.2.0.beta5.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
discourse · discourse
< 3.1.4; >= 3.2.0beta1, < 3.2.0.beta4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-48297
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-48297
Vendor Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-hf2v-r5xm-8p37
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