CVE-2021-41163 is a critical remote code execution (RCE) vulnerability affecting Discourse, an open-source community platform, due to insufficient validation of subscribe_url values. With a CVSS score of 9.8 (CRITICAL), it allows unauthenticated attackers to execute arbitrary code with high impact on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating high awareness. Organizations are urged to update to patched Discourse versions or implement the suggested workaround of blocking requests to /webhooks/aws.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.7.9CPE matchmatch criteria | cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* | ||
2.8.0CPE matchmatch criteria | cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:* | ||
2.8.0CPE matchmatch criteria | cpe:2.3:a:discourse:discourse:2.8.0:beta2:*:*:*:*:*:* | ||
2.8.0CPE matchmatch criteria | cpe:2.3:a:discourse:discourse:2.8.0:beta3:*:*:*:*:*:* | ||
2.8.0CPE matchmatch criteria | cpe:2.3:a:discourse:discourse:2.8.0:beta4:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.