Quick answers
- Is CVE-2026-49248 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-49248 being exploited in the wild.
- How severe is CVE-2026-49248?
- Informational severity, with a CVSS score of 8.3, published 18 June 2026.
- Which products and versions are affected?
- OneDev <= 15.0.6.
- Is there a fix for CVE-2026-49248?
- A patch was published on 2026-05-24: Fixed in version 15.0.7 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-49248 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-49248?
- Check whether you run OneDev at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A symlink following vulnerability exists in OneDev's TarUtils.untar() component due to improper validation of TAR archive entries. While a previous fix (CVE-2021-21251) blocked directory traversal using '..' segments, it failed to account for absolute paths in symbolic link targets. An attacker with CI Job write access can craft a TAR archive containing a symlink pointing to an absolute path on the server, followed by a file entry that traverses that symlink. This allows for arbitrary file writes on the server host, which can be leveraged for Remote Code Execution (RCE). The issue is resolved in version 15.0.7.
Affected products
- theonedev OneDev <= 15.0.6
Timeline
- 2026-05-24: advisory: GitHub Security Advisory published
- 2026-06-18: disclosed: CVE published to NVD
- 2026-05-24: patched: Fixed in version 15.0.7