CVE-2021-41163
CRITICALDiscourse - RCE
Title source: llmDescription
Discourse is an open source platform for community discussion. In affected versions maliciously crafted requests could lead to remote code execution. This resulted from a lack of validation in subscribe_url values. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. To workaround the issue without updating, requests with a path starting /webhooks/aws path could be blocked at an upstream proxy.
Exploits (2)
nomisec
WORKING POC
2 stars
by ibrahmsql · poc
https://github.com/ibrahmsql/discourse-CVE-2021-41163
Scores
CVSS v3
10.0
EPSS
0.0365
EPSS Percentile
87.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Details
CWE
CWE-74
Status
published
Products (2)
discourse/discourse
2.8.0 beta1 (6 CPE variants)
discourse/discourse
< 2.7.9
Published
Oct 20, 2021
Tracked Since
Feb 18, 2026