Medium severity · published Aug 1, 2022
CVE-2022-31182
Cache poisoning via maliciously-formed request in Discourse
5.3
CVSS
0.8%
EPSS
No
On KEV
Description
Discourse is the an open source discussion platform. In affected versions a maliciously crafted request for static assets could cause error responses to be cached by Discourse's default NGINX proxy configuration. A corrected NGINX configuration is included in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
discourse · discourse
< 2.8.7; < 2.9.0.beta8 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-31182
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-31182
Patch
https://github.com/discourse/discourse/commit/7af25544c3940c4d046c51f4cfac9c72a06d4f50
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-4ff8-3j78-w6pp
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