Link following in OneDev - CVE-2026-49248

 

Link following in OneDev - CVE-2026-49248

Published: September 17, 2026


Vulnerability identifier: #VU150644
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-49248
CWE-ID: CWE-59
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to improper link resolution in TarUtils.untar when extracting an archive containing a symlink with an absolute path. A remote user can cause extraction of a crafted archive to overwrite arbitrary server files and execute arbitrary code.


Affected software

OneDev

How to mitigate CVE-2026-49248

Install security update from vendor's website.

OneDev - update to 15.0.7

External References

Related Security Bulletins