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CVE-2026-35360

uutils coreutils touch Arbitrary File Truncation via TOCTOU Race Condition

6.3 MediumFix available

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
High
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
High

Exploit likelihood

0.10%Up 0.1 points since Apr 23, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.3

uutils coreutils touch Arbitrary File Truncation via TOCTOU Race Condition

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Record
CVE-2026-35360
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness
CWE-367
Updated
2026-11-02
EUVDEUVD-2026-25002 6.3

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Record
EUVD-2026-25002
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-q6m9-xj2w-xmrc 6.3

uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Record
GHSA-q6m9-xj2w-xmrc
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness
CWE-367
Updated
2026-11-02
NVD 6.3

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Record
CVE-2026-35360
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness
CWE-367
Updated
2026-11-02
OSVDEBIAN-CVE-2026-35360 6.3

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Record
DEBIAN-CVE-2026-35360
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Updated
2026-11-02
OSVGHSA-q6m9-xj2w-xmrc 6.3

uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Record
GHSA-q6m9-xj2w-xmrc
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness
CWE-367
Updated
2026-11-02
OSVUBUNTU-CVE-2026-35360 6.3

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Record
UBUNTU-CVE-2026-35360
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
coreutils
crates.io
through 0.8.0 None known
rust-coreutils
Debian:12
All versions, plus listed versions
0.0.17-20.0.17-30.0.17-40.0.17-50.0.17-6
Show 39 moreShow less
0.0.19-10.0.19-20.0.19-30.0.20-10.0.21-10.0.22-10.0.23-10.0.23-20.0.23-30.0.24-10.0.24-20.0.26-10.0.26-20.0.26-30.0.26-40.0.26-50.0.27-10.0.27-20.0.27-30.0.30-10.0.30-20.0.30-30.0.30-3~exp10.0.30-40.10.0-10.11.0-10.11.0-20.12.0-10.6.0-10.7.0-10.8.0-10.8.0-20.8.0-30.8.0-40.8.0-50.8.0-60.9.0-10.9.0-20.9.0-3
None known
rust-coreutils
Debian:13
All versions, plus listed versions
0.0.30-20.0.30-30.0.30-3~exp10.0.30-40.10.0-1
Show 14 moreShow less
0.11.0-10.11.0-20.12.0-10.6.0-10.7.0-10.8.0-10.8.0-20.8.0-30.8.0-40.8.0-50.8.0-60.9.0-10.9.0-20.9.0-3
None known
rust-coreutils
Debian:14
before 0.10.0-1, plus listed versions
0.0.30-20.0.30-30.0.30-3~exp10.0.30-40.6.0-1
Show 10 moreShow less
0.7.0-10.8.0-10.8.0-20.8.0-30.8.0-40.8.0-50.8.0-60.9.0-10.9.0-20.9.0-3
0.10.0-1
rust-coreutils
Ubuntu:24.04:LTS
All versions, plus listed versions
0.0.20-10.0.22-10.0.23-10.0.23-20.0.23-30.0.24-10.0.24-2
None known
rust-coreutils
Ubuntu:25.10
All versions, plus listed versions
0.0.30-10.0.30-20.0.30-2ubuntu20.1.0-0ubuntu10.1.0+git20250711.2ba3a33-0ubuntu1
Show 11 moreShow less
0.1.0+git20250711.2ba3a33-0ubuntu20.1.0+git20250711.2ba3a33-0ubuntu30.1.0+git20250711.2ba3a33-0ubuntu40.1.0+git20250801.cf79675-0ubuntu10.1.0+git20250813.4af2a84-0ubuntu20.1.0+git20250813.4af2a84-0ubuntu40.1.0+git20250813.4af2a84-0ubuntu60.1.0+git20250813.4af2a84-0ubuntu70.2.2-0ubuntu10.2.2-0ubuntu20.2.2-0ubuntu2.1
None known
rust-coreutils
Ubuntu:26.10
All versions, plus listed versions
0.8.0-0ubuntu30.8.0-0ubuntu40.9.0-2ubuntu20.10.0-1ubuntu10.10.0-1ubuntu2
Show 5 moreShow less
0.10.0-1ubuntu30.11.0-2ubuntu10.11.0-2ubuntu20.12.0-1ubuntu10.12.0-1ubuntu2
None known
rust-coreutils
Ubuntu:26.04:LTS
All versions, plus listed versions
0.2.2-0ubuntu20.2.2-0ubuntu40.5.0-0ubuntu10.5.0-0ubuntu20.6.0-0ubuntu10.7.0-0ubuntu10.8.0-0ubuntu30.10.0-1ubuntu2~26.04.1
None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-35360 is a medium vulnerability (CVSS 6.3) in Uutils Coreutils, published April 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.10%, the 1st percentile. Fixed in rust-coreutils 0.10.0-1.

References

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