Critical severity10.0NVD Advisory· Published Jan 15, 2021· Updated Jun 17, 2026
CVE-2021-21242
CVE-2021-21242
Description
OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnerability which can lead to pre-auth remote code execution. AttachmentUploadServlet deserializes untrusted data from the Attachment-Support header. This Servlet does not enforce any authentication or authorization checks. This issue may lead to pre-auth remote code execution. This issue was fixed in 4.0.3 by removing AttachmentUploadServlet and not using deserialization
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Affected products
2Patches
Vulnerability mechanics
References
2- github.com/theonedev/onedev/commit/f864053176c08f59ef2d97fea192ceca46a4d9benvdPatchThird Party Advisory
- github.com/theonedev/onedev/security/advisories/GHSA-5q3q-f373-2jv8nvdThird Party Advisory
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