Improper input validation in Uutils Coreutils
CVE-2026-35380
A logic error in the cut utility of uutils coreutils causes the program to incorrectly interpret the literal two-byte string '' (two single quotes) as an empty delimiter. The implementation mistakenly maps this string to the NUL character for both the -d (delimiter) and --output-delimiter options. This vulnerability can lead to silent data corruption or logic errors in automated scripts and data pipelines that process strings containing these characters, as the utility may unintentionally split or join data on NUL bytes rather than the intended literal characters.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.002 (5.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Uutils Coreutils — versions 0
Weakness classification (CWE)
References
- security@ubuntu.com (issue-tracking, Exploit, Patch, patch, Issue Tracking)
- security@ubuntu.com (vendor-advisory, Release Notes)
Frequently asked questions
- What is CVE-2026-35380?
- CVE-2026-35380 is a medium-severity vulnerability in Uutils Coreutils, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2026-04-22.
- How severe is CVE-2026-35380?
- Medium severity. CVSS v3 base score is 5.5 out of 10.