CVE-2026-35381: cut -s Ignored Vulnerability

LOW
Advisory Identifier: GHSA-pmfc-4wjj-gmhx
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CVSS 3.3
CWE-684
Published
Advisory Summary

CVE-2026-35381 is a LOW (CVSS 3.3) -s ignored vulnerability (CWE-684: Incorrect Provision of Specified Functionality) affecting cut libraries in the crates.io ecosystem. The issue involves -s ignored in -z -d '' newline-delimiter mode. Remediation is available by upgrading affected packages to version 0.8.0.

CVE-2026-35381 at a Glance

CVE Identifier CVE-2026-35381
GHSA Identifier GHSA-pmfc-4wjj-gmhx
Severity LOW
CVSS v3.1 Base Score 3.3
CWE Classification CWE-684: Incorrect Provision of Specified Functionality
Affected Product cut
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 3.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-35381

To remediate this vulnerability, upgrade all affected cut dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

uu_cut fixed: 0.8.0 
Upgrade uu_cut to 0.8.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for uu_cut

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-35381, inspect your project dependencies for cut:

inspect dependencies for uu_cut

Analyze the terminal output to locate any version of cut in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.8.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-684: Incorrect Provision of Specified Functionality, where the code does not function according to its published specifications, potentially leading to incorrect usage. In cut, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

`cut` routes `-z -d ''` through a special newline-delimiter path that ignores the `-s` only-delimited flag, emitting whole undelimited records (plus NUL) that should be suppressed. Pipelines relying on `cut -s` to drop undelimited records process data that should be filtered. ``` printf 'abc' | cut -z -d '' -s -f 1 | od -An -tx1 # GNU: no output ; uutils: 61 62 63 00 ``` --- _Zellic private finding (zellic-ext/coreutils-private PR #102). Reported in the Zellic *uutils coreutils Program Security Assessment* (for Canonical, Jan 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`._

CVE-2026-35381 Affected cut Versions

1 component(s)
Fixed Versions:
0.8.0
Product / Package Ecosystem Affected Versions Fixed Version
uu_cut
 crates.io
< 0.8.0
0.8.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/uutils/coreutils/security/advisories/GHSA-pmfc-4wjj-gmhx
NVD — CVE-2026-35381 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35381
cut Source Repository REPOSITORY
https://github.com/uutils/coreutils/pull/11394
Security Fix Commit FIX COMMIT
https://github.com/uutils/coreutils/commit/483f13e91830c468262aa1e010e753d6ae99c898
cut Source Repository REPOSITORY
https://github.com/uutils/coreutils
cut Release RELEASE
https://github.com/uutils/coreutils/releases/tag/0.8.0

Frequently Asked Questions

What is CVE-2026-35381?
CVE-2026-35381 is a security vulnerability in cut involving -s ignored in -z -d '' newline-delimiter mode under CWE-684: Incorrect Provision of Specified Functionality.
Which cut versions are affected?
Affected versions include releases prior to 0.8.0 across affected packages: uu_cut.
What version fixes CVE-2026-35381?
Upgrading to 0.8.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is uu_cut affected?
Yes, uu_cut is affected in releases prior to 0.8.0. Upgrade your dependency to 0.8.0 or later.
What is the CVSS score of CVE-2026-35381?
CVE-2026-35381 has a CVSS v3.1 base score of 3.3 (LOW) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2026-35381?
CVE-2026-35381 is classified under CWE-684: Incorrect Provision of Specified Functionality (The code does not function according to its published specifications, potentially leading to incorrect usage.).
How can I check crates.io dependencies for CVE-2026-35381?
Run the dependency tree command: 'inspect dependencies for uu_cut'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-pmfc-4wjj-gmhx",
  "modified" : "2026-10-06T18:15:53Z",
  "published" : "2026-07-06T21:54:29Z",
  "aliases" : [ "CVE-2026-35381" ],
  "summary" : "cut: -s ignored in -z -d '' newline-delimiter mode",
  "details" : "`cut` routes `-z -d ''` through a special newline-delimiter path that ignores the `-s` only-delimited flag, emitting whole undelimited records (plus NUL) that should be suppressed. Pipelines relying on `cut -s` to drop undelimited records process data that should be filtered.\n```\nprintf 'abc' | cut -z -d '' -s -f 1 | od -An -tx1   # GNU: no output ; uutils: 61 62 63 00\n```\n\n---\n_Zellic private finding (zellic-ext/coreutils-private PR #102). Reported in the Zellic *uutils coreutils Program Security Assessment* (for Canonical, Jan 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`._",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "uu_cut"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.8.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/security/advisories/GHSA-pmfc-4wjj-gmhx"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35381"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/pull/11394"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/commit/483f13e91830c468262aa1e010e753d6ae99c898"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/uutils/coreutils"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/releases/tag/0.8.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-684" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-06T21:54:29Z",
    "nvd_published_at" : null
  }
}