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CVE-2026-35381: A logic error in the cut utility of uutils coreutils causes the utility to ignore the -s (only-delimited) flag

18
Routine
LOW 3.3UPGRADE

CVE-2026-35381 is a low-severity flaw (CVSS 3.3) affecting coreutils. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score3.3 (Low)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.2% (top 92%)
CISA exploited listNo
WeaknessCWE-684
Published2026-04-22
Last modified2026-10-26
Publisher (CNA): Canonical Ltd. · Vendor: uutils

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Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

uutils coreutils UPGRADE
Affected: < 0.8.0
Fixed in: 0.8.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy coreutils || rpm -q coreutils || coreutils --version
2. UPGRADE to 0.8.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade coreutils
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade coreutils
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-35381?

coreutils: upgrade to 0.8.0. Exact commands for each OS are on this page.

Is CVE-2026-35381 being exploited?

CVE-2026-35381 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-35381 affect?

CVE-2026-35381 affects coreutils. Severity is low (CVSS 3.3). 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 spec

How urgent is CVE-2026-35381?

Priority 18/100. Public exploit reference

Related CVEs

References

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