CVE-2021-21243 is a critical pre-authentication Remote Code Execution (RCE) vulnerability affecting OneDev versions prior to 4.0.3. The flaw stems from two Kubernetes REST endpoints that deserialize untrusted data without authentication or authorization, allowing an unauthenticated attacker to execute arbitrary code. With a CVSS score of 9.8 (Critical), this vulnerability is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the high severity warrants immediate patching to version 4.0.3 or later.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.0.3CPE matchmatch criteria | cpe:2.3:a:onedev_project:onedev:*:*:*:*:*:*:*:* |
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:N
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.
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The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.