High severity · published Oct 8, 2024
CVE-2024-47773
Anonymous cache poisoning via XHR requests in Discourse
8.2
CVSS
1.8%
EPSS
No
On KEV
Description
Discourse is an open source platform for community discussion. An attacker can make several XHR requests until the cache is poisoned with a response without any 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 should 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)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
discourse · discourse
stable: < 3.3.2; tests-passed: < 3.4.0.beta2 · source: vendor, NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-47773
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-47773
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-58vv-9j8h-hw2v
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