CVE-2023-28111
Discourse vulnerable to SSRF protection bypass possible with IPv4-mapped IPv6 addresses
7.5
HIGH
CVSS 3.1
EPSS 0.25%
Description
Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the `beta` and `tests-passed` branches, attackers are able to bypass Discourse's server-side request forgery (SSRF) protection for private IPv4 addresses by using a IPv4-mapped IPv6 address. The issue is patched in the latest beta and tests-passed version of Discourse. version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.
How to fix CVE-2023-28111
To remediate CVE-2023-28111, upgrade the affected package to a fixed version below.
- —upgrade to 3.1.0 or later
Is CVE-2023-28111 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.1.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |