Vulnerability · Published Apr 22, 2026 · Assigned by canonical

CVE-2026-35362uutils coreutils Missing TOCTOU Protection on Non-Linux Unix Platforms in Safe Traversal Module

Low 3.6

In plain English

A low-severity security flaw in coreutils from Uutils. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.6Low

Exploit odds (30 days)0.2%top 92.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	rust-coreutils	no fix listed	DEBIAN-CVE-2026-35362
Debian:13	rust-coreutils	no fix listed	DEBIAN-CVE-2026-35362
Debian:14	rust-coreutils	0.6.0-1	DEBIAN-CVE-2026-35362
Ubuntu:24.04:LTS	rust-coreutils	no fix listed	UBUNTU-CVE-2026-35362
Ubuntu:25.10	rust-coreutils	no fix listed	UBUNTU-CVE-2026-35362

Affected products (as reported)

Vendor	Product	Versions
Uutils	coreutils	0 – before 0.6.0

Weakness: CWE-367 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

References

https://github.com/uutils/coreutils/pull/9792 issue-tracking, patch
https://github.com/uutils/coreutils/releases/tag/0.6.0 vendor-advisory