CVE-2023-28111CWE-918

Discourse vulnerable to SSRF protection bypass possible with IPv4-mapped IPv6 addresses

Medium · published March 17, 2023

CVSS v3.1
5.7
EPSS
1%
Percentile
45.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00555 · 45.6th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2023-03-17T17:00Z
EPSS history
Timeline
  • 17 MAR 17:00Z
    Discourse vulnerable to SSRF protection bypass possible with IPv4-mapped IPv6 addresses
    cvelistv5