🛡️ CVE-2026-35342 — coreutils

🟢 CVSS 2.0 — Low ✅ No Known Exploit CWE-377 OSV
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Duplicate Advisory: uutils coreutils' mktemp utility doesn't properly handle an empty TMPDIR environment variable

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-2w8r-9xj7-69j5. This link is maintained to preserve external references.

Original 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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

Affected software

CVE-2026-35342 is recorded against 2 packages.

  • coreutils
  • uu-mktemp

Timeline and source

Published on 22 April 2026 and last revised on 6 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)

CVE-2026-35342 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE CWE-377
Public Exploit ✅ No
Source OSV
Published 2026-04-22
Updated 2026-08-12
Modified 2026-07-06

Affected Packages

Software From version Fixed in
coreutils — —
uu-mktemp — —

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