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 p…
Exact source revision recorded 1 Nov 2026 06:08:34 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-24971
PublishedThe 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.
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Original publisher date fields
datePublished: Apr 22, 2026, 4:07:41 PM
dateUpdated: Apr 22, 2026, 6:15:53 PM
- Source published
- Apr 22, 2026, 4:07:41 PM (timezone not stated)
- Source modified
- Apr 22, 2026, 6:15:53 PM (timezone not stated)
- Observed here
- 1 Nov 2026 06:08:34 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
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EUVD CVSS 3.1 · 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N