CVE-2026-35360
uutils coreutils touch Arbitrary File Truncation via TOCTOU Race Condition
- State
- Published
- Severity
- 6.3 Medium
- Published
- Apr 22, 2026
- Updated
- Apr 22, 2026
- Reserved
- Apr 2, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.3 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H | canonical |
Weaknesses
- CWE-367 Time-of-Check Time-of-Use (TOCTOU) Race Condition
Affected Products
| Product | Versions |
|---|---|
coreutilsUutils |
References
- https://github.com/uutils/coreutils/issues/10019issue-tracking
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