CVE-2021-21245
This issue may lead to arbitrary file upload which can be used to upload a WebShell to OneDev server.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, AttachmentUploadServlet also saves user controlled data (`request.getInputStream()`) to a user specified location (`request.getHeader("File-Name")`). This issue may lead to arbitrary file upload which can be used to upload a WebShell to OneDev server. This issue is addressed in 4.0.3 by only allowing uploaded file to be in attachments folder. The webshell issue is not possible as OneDev never executes files in attachments folder.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.21% probability · 68th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- onedev project/onedev
- Source
- security-advisories@github.com
EPSS 1.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/theonedev/onedev/commit/0c060153fb97c0288a1917efdb17cc426934dacbPatch, Third Party Advisory
- https://github.com/theonedev/onedev/security/advisories/GHSA-62m2-38q5-96w9Third Party Advisory
- https://github.com/theonedev/onedev/commit/0c060153fb97c0288a1917efdb17cc426934dacbPatch, Third Party Advisory
- https://github.com/theonedev/onedev/security/advisories/GHSA-62m2-38q5-96w9Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.