CVE-2021-41163
RCE via malicious SNS subscription payload
9.8
CRITICAL
CVSS 3.1
EPSS 3.7%
Description
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.
How to fix CVE-2021-41163
To remediate CVE-2021-41163, upgrade the affected package to a fixed version below.
- —upgrade to 2.7.9 or later
Is CVE-2021-41163 being exploited?
Low — EPSS is 3.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.7.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |