High severity · published Feb 4, 2025
CVE-2025-23023
Discourse is an open source platform for community discussion
8.2
CVSS
0.3%
EPSS
No
On KEV
Description
Discourse is an open source platform for community discussion. In affected versions an attacker can carefully craft a request with the right request headers to poison the anonymous cache (for example, the cache may have a response with missing preloaded data). This issue only affects anonymous visitors of the site. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade may disable anonymous cache by setting the `DISCOURSE_DISABLE_ANON_CACHE` environment variable to a non-empty value.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
Discourse · Discourse
before 3.3.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-23023
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-23023
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-5h4h-2f46-r3c7
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