What is CVE-2026-35353?

CVE-2026-35353 is a low-severity vulnerability in Uutils Coreutils, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 3.3/10. Published 2026-04-22.

How severe is CVE-2026-35353?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Uutils Coreutils

CVE-2026-35353

The mkdir utility in uutils coreutils incorrectly applies permissions when using the -m flag by creating a directory with umask-derived permissions (typically 0755) before subsequently changing them to the requested mode via a separate chm…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.001 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Uutils Coreutils — versions 0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

security@ubuntu.com (issue-tracking, Patch, patch, Issue Tracking)
security@ubuntu.com (vendor-advisory, Release Notes)

Frequently asked questions

What is CVE-2026-35353?: CVE-2026-35353 is a low-severity vulnerability in Uutils Coreutils, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 3.3/10. Published 2026-04-22.
How severe is CVE-2026-35353?: Low severity. CVSS v3 base score is 3.3 out of 10.