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CVE-2026-35342 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://github.com/uutils/coreutils/pull/10566 Canonical Ltd.
https://github.com/uutils/coreutils/releases/tag/0.6.0 Canonical Ltd.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-377 Insecure Temporary File Canonical Ltd.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-35342
NVD Published Date:
04/22/2026
NVD Last Modified:
04/22/2026
Source:
Canonical Ltd.