Vulnerability · Published Apr 22, 2026 · Assigned by canonical
CVE-2026-35381uutils coreutils cut Local Logic Error and Data Integrity Issue in Output Filtering
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 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A logic error in the cut utility of uutils coreutils causes the utility to ignore the -s (only-delimited) flag when using the -z (null-terminated) and -d '' (empty delimiter) options together. The implementation incorrectly routes this specific combination through a specialized newline-delimiter code path that fails to check the record suppression status. Consequently, uutils cut emits the entire record plus a NUL byte instead of suppressing it. This divergence from GNU coreutils behavior creates a data integrity risk for automated pipelines that rely on cut -s to filter out undelimited data.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rust-coreutils | no fix listed | DEBIAN-CVE-2026-35381 |
| Debian:13 | rust-coreutils | no fix listed | DEBIAN-CVE-2026-35381 |
| Debian:14 | rust-coreutils | 0.8.0-1 | DEBIAN-CVE-2026-35381 |
| Ubuntu:24.04:LTS | rust-coreutils | no fix listed | UBUNTU-CVE-2026-35381 |
| Ubuntu:25.10 | rust-coreutils | no fix listed | UBUNTU-CVE-2026-35381 |
Affected products (as reported)
Weakness: CWE-684 · 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/11394 issue-tracking, patch
- https://github.com/uutils/coreutils/releases/tag/0.8.0 vendor-advisory