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