TI-2021-04345 Aliases CVE-2021-21242

Pre-Auth Unsafe Deserialization on AttachmentUploadServet

HIGH 81CWE-74Published 2021-01-15 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

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

Why it matters now

EPSS 0.74191 99th percentileScored 2026-11-07

Fix Fixed onedev (theonedev): 4.0.3

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
theonedev	onedev	before 4.0.3	4.0.3	Patch available	CNA

onedev Vendortheonedev Affected before 4.0.3 Fixed in 4.0.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:onedev_project:onedev::::::::	before 4.0.3	Vulnerable	theonedev

cpe:2.3:a:onedev_project:onedev:*:*:*:*:*:*:*:* Versions before 4.0.3 Vulnerable ·theonedev

Remediation

Fix · CNA onedev (theonedev) Fixed in 4.0.3

Timeline

2026-10-02 Threatist record created from CVE-2021-21242

References

Patch 1

https://github.com/theonedev/onedev/commit/f864053176c08f59ef2d97fea192ceca46a4d9be

Advisory 1

https://github.com/theonedev/onedev/security/advisories/GHSA-5q3q-f373-2jv8

TI-2022-18585 CI/CD Docker Escape in OneDev CVSS 3.1CRITICAL 9.9
TI-2022-18584 Access Control Bypass in Onedev CVSS 3.1CRITICAL 9.8
TI-2021-04346 Pre-Auth Unsafe Deserialization on KubernetesResource CVSS 3.1CRITICAL 10.0
TI-2022-18587 Git Repository Disclosure in Onedev CVSS 3.1HIGH 7.5
TI-2021-04349 Pre-Auth Access token leak CVSS 3.1HIGH 8.6
TI-2024-30380 OneDev vulnerable to arbitrary file reading for unauthenticated user CVSS 4.0HIGH 8.7

See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences