EUVD-2026-24971CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
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1DescriptionNVD
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 current working directory (CWD) instead of the intended secure temporary directory. If the CWD is more permissive or accessible to other users than /tmp, it may lead to unintended information disclosure or unauthorized access to temporary data.
AnalysisAI
mktemp utility in uutils coreutils mishandles empty TMPDIR environment variables by creating temporary files in the current working directory instead of falling back to /tmp, potentially exposing sensitive data if the CWD has overly permissive access controls. Affects uutils coreutils versions prior to 0.6.0 and requires local attacker with limited privileges to manipulate the environment or exploit overly accessible working directories; CVSS 3.3 reflects low severity (local access, limited confidentiality impact) despite information disclosure risk.
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