Medium severity · published Nov 2, 2022
CVE-2022-39241
Possible Server-Side Request Forgery (SSRF) in webhooks
4.9
CVSS
0.6%
EPSS
No
On KEV
Description
Discourse is a platform for community discussion. A malicious admin could use this vulnerability to perform port enumeration on the local host or other hosts on the internal network, as well as against hosts on the Internet. Latest `stable`, `beta`, and `test-passed` versions are now patched. As a workaround, self-hosters can use `DISCOURSE_BLOCKED_IP_BLOCKS` env var (which overrides `blocked_ip_blocks` setting) to stop webhooks from accessing private IPs.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
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
<= 2.8.9; <= 2.9.0.beta10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-39241
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-39241
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-rcc5-28r3-23rr
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