CVE-2023-28112

MEDIUM

Discourse < 3.1.0.beta3 - Server-Side Request Forgery via FastImage URL Handling

Title source: llm
STIX 2.1

Description

Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the `beta` and `tests-passed` branches, some user provided URLs were being passed to FastImage without SSRF protection. Insufficient protections could enable attackers to trigger outbound network connections from the Discourse server to private IP addresses. This affects any site running the `tests-passed` or `beta` branches versions 3.1.0.beta2 and prior. This issue is patched in version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.

References (3)

Core 3

Scores

CVSS v3 5.9
EPSS 0.0058
EPSS Percentile 43.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (2)
discourse/discourse 3.1.0 beta1 (2 CPE variants)
discourse/discourse < 3.1.0 (2 CPE variants)
Published Mar 17, 2023
Tracked Since Feb 18, 2026