CVE-2023-47121
CWE-918Published: November 10, 2023· Updated: Jun 17, 2026
Official Description
Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, the embedding feature is susceptible to server side request forgery. The issue is patched in version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches. As a workaround, disable the Embedding feature.
Risk Analysis
Discourse versions prior to 3.1.3 and 3.2.0.beta3 are susceptible to server-side request forgery (SSRF) via the embedding feature. This critical flaw allows remote attackers to force the server to make unauthorized requests.
There is no known public exploit for this vulnerability, and it is not in the CISA KEV. It is remotely exploitable.
Upgrade to Discourse 3.1.3 or 3.2.0.beta3, or disable the Embedding feature as a temporary workaround.
Technical Analysis
CVE-2023-47121 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (6)
Quick Facts
Related CVEs (CWE-918)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-47121 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts