CVE-2026-49248

OneDev is a Git server with CI/CD, kanban, and packages. In versions 15.0.6 and below, TarUtils.untar() creates symbolic links verbatim from TAR entry getLinkName() without validating whether the target is an absolute path. A subsequent file entry in the same archive traverses the symlink, writing to arbitrary server-side locations. This is exploitable by any authenticated user with CI Job write access — no admin interaction required. This is an incomplete fix bypass of CVE-2021-21251 (GHSA-2w6j-wc8c-9mq2): that patch blocked .. path segments but did not address absolute symlink targets. This issue has been fixed in version 15.0.7.

CVSS

No CVSS.

References

Link	Resource
https://github.com/theonedev/onedev/commit/4f8684acebc4bfeefd3c7e23a34a4fd591cb27ad
https://github.com/theonedev/onedev/security/advisories/GHSA-55g8-94r5-cj37

Configurations

No configuration.

History

18 Jun 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-18 21:16

Updated : 2026-06-22 16:16

NVD link : CVE-2026-49248

Mitre link : CVE-2026-49248

CVE.ORG link : CVE-2026-49248

JSON object : View

Products Affected

No product.

CWE

CWE-61

UNIX Symbolic Link (Symlink) Following

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