Vulnerability · Published Apr 22, 2026 · Assigned by canonical

CVE-2026-35343uutils coreutils cut Inconsistent Output Suppression with Newline Delimiters

Low 3.3

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 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.3Low

Exploit odds (30 days)0.1%top 97.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The cut utility in uutils coreutils incorrectly handles the -s (only-delimited) option when a newline character is specified as the delimiter. The implementation fails to verify the only_delimited flag in the cut_fields_newline_char_delim function, causing the utility to print non-delimited lines that should have been suppressed. This can lead to unexpected data being passed to downstream scripts that rely on strict output filtering.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	rust-coreutils	no fix listed	DEBIAN-CVE-2026-35343
Debian:13	rust-coreutils	no fix listed	DEBIAN-CVE-2026-35343
Debian:14	rust-coreutils	0.7.0-1	DEBIAN-CVE-2026-35343
Ubuntu:24.04:LTS	rust-coreutils	no fix listed	UBUNTU-CVE-2026-35343
Ubuntu:25.10	rust-coreutils	no fix listed	UBUNTU-CVE-2026-35343

Affected products (as reported)

Vendor	Product	Versions
Uutils	coreutils	0 – before 0.8.0

Weakness: CWE-670 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

https://github.com/uutils/coreutils/pull/11143 patch, issue-tracking
https://github.com/uutils/coreutils/releases/tag/0.7.0 vendor-advisory