CVE-2026-35342
Last modified
CVE-2026-35342 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. 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. EPSS estimates a 0.13% chance of exploitation in the next 30 days.
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
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Uutils | Coreutils | < 0.6.0 |
References
- https://github.com/uutils/coreutils/pull/10566Issue Tracking, Patch
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
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