Vulnerability record · CVE-2021-21245 · published 15 January 2021

CVE-2021-21245: Onedev project onedev unrestricted file upload vulnerability

Onedev Project · Onedev

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.

9.8 CVSS 3.1 Critical EPSS 1.2% · top 33.1% CWE-434 · Unrestricted file upload

9.8CVSS 3.1 base score, v2 7.5

1.2%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Onedev Onedev Project

References

Link	Tags
https://github.com/theonedev/onedev/commit/0c060153fb97c0288a1917efdb17cc426934dacb	PatchThird Party Advisory
https://github.com/theonedev/onedev/security/advisories/GHSA-62m2-38q5-96w9	Third Party Advisory
https://github.com/theonedev/onedev/commit/0c060153fb97c0288a1917efdb17cc426934dacb	PatchThird Party Advisory
https://github.com/theonedev/onedev/security/advisories/GHSA-62m2-38q5-96w9	Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-21245), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.