Symbolic Link Vulnerability in OneDev Git Server by OneDev
CVE-2026-49248

8.3HIGH

Key Information:

Vendor

Theonedev

Status
Onedev
Vendor
CVE Published:
18 June 2026

What is CVE-2026-49248?

OneDev Git Server, which provides CI/CD, kanban, and package management features, is affected by a vulnerability that arises from the TarUtils.untar() function. This function allows authenticated users with CI Job write access to create symbolic links without adequate validation of absolute paths. As a result, an attacker can gain unauthorized write access to arbitrary server-side locations if a vulnerable TAR archive is extracted. This vulnerability serves as a bypass to a previous fix that addressed path segment manipulations but did not consider the implications of absolute symlink targets. It has been addressed in version 15.0.7.

Affected Version(s)

onedev < 15.0.7

References

https://github.com/theonedev/onedev/security/advisories/G...
x_refsource_CONFIRM
https://github.com/theonedev/onedev/commit/4f8684acebc4bf...
x_refsource_MISC

CVSS V4

Score:
8.3
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.