CVE-2026-49248 OneDev: RCE through absolute-path symlink following allows low-privileged users to overwrite arbitrary server via TarUtils.untar

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...

CVE-2026-49248

OneDev CVE-2026-49248 affects versions 15.0.6 and earlier. TarUtils.untar() creates symbolic links using entry getLinkName() without validating absolute path targets; a following file entry can traverse the symlink and write to arbitrary server-side locations. This enables RCE-like behavior for a...

CVE-2026-49248 OneDev: RCE through absolute-path symlink following allows low-privileged users to overwrite arbitrary server via TarUtils.untar

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...