Onedev
CVE-2021-21245
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK
2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could upload malicious files that can be executed on the server by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
OneDev is an all-in-one devops platform. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Unrestricted File Upload vulnerability could allow attackers to upload malicious files that can be executed on the server.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. 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. Affected products include: Onedev Project Onedev. Version information: version 4.0.3.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.
Affected Products (CPE)NVD
Onedev is an open source, self-hosted Git Server with CI/CD and Kanban. Rated critical severity (CVSS 9.9), this vulnera
Onedev is an open source, self-hosted Git Server with CI/CD and Kanban. Rated critical severity (CVSS 9.8), this vulnera
Onedev v7.4.14 contains a path traversal vulnerability which allows attackers to access restricted files and directories
OneDev is a Git server with CI/CD, kanban, and packages. Rated high severity (CVSS 8.7), this vulnerability is remotely
Onedev is an open source, self-hosted Git Server with CI/CD and Kanban. Rated high severity (CVSS 7.5), this vulnerabili
OneDev is an all-in-one devops platform. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no
OneDev is an all-in-one devops platform. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable,
OneDev is an all-in-one devops platform. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable,
OneDev is an all-in-one devops platform. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable,
Onedev is an open source, self-hosted Git Server with CI/CD and Kanban. Rated medium severity (CVSS 5.4), this vulnerabi
Onedev is a self-hosted Git Server with CI/CD and Kanban. Rated high severity (CVSS 8.8), this vulnerability is remotely
OneDev is an all-in-one devops platform. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low
Exploit-DB