GHSA-2CXP-XQ3C-MJXX uutils coreutils' mktemp utility doesn't properly handle an empty TMPDIR environment variable

The mktemp utility in uutils coreutils fails to properly handle an empty TMPDIR environment variable. Unlike GNU mktemp, which falls back to /tmp when TMPDIR is an empty string, the uutils implementation treats the empty string as a valid path. This causes temporary files to be created in the...

CVE-2026-35342

CVE-2026-35342 affects the mktemp utility in the uutils coreutils project. The issue arises because the implementation does not treat an empty TMPDIR as a fallback to /tmp (unlike GNU mktemp); instead, it treats an empty string as a valid path, causing temporary files to be created in the current...