CVE-2026-35375: Coreutils Uutils Coreutils Has An Improper Vulnerability

LOW
Advisory Identifier: GHSA-vx9m-xjwf-8cqm
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CVSS 3.3
CWE-176
Published
Advisory Summary

CVE-2026-35375 is a LOW (CVSS 3.3) uutils coreutils has an improper vulnerability (CWE-176: Improper Handling of Unicode Encoding) affecting Coreutils libraries in the crates.io ecosystem. The issue involves uutils coreutils has an improper handling of unicode encoding issue. Remediation is available by upgrading affected packages to version 0.8.0.

CVE-2026-35375 at a Glance

CVE Identifier CVE-2026-35375
GHSA Identifier GHSA-vx9m-xjwf-8cqm
Severity LOW
CVSS v3.1 Base Score 3.3
CWE Classification CWE-176: Improper Handling of Unicode Encoding
Affected Product Coreutils
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-2026-35375

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

coreutils fixed: 0.8.0 
Upgrade coreutils 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 coreutils

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-35375, inspect your project dependencies for Coreutils:

inspect dependencies for coreutils

Analyze the terminal output to locate any version of Coreutils 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-176: Improper Handling of Unicode Encoding, where the product does not properly handle when an input contains unicode encoding. In Coreutils, 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

A logic error in the split utility of uutils coreutils causes the corruption of output filenames when provided with non-UTF-8 prefix or suffix inputs. The implementation utilizes to_string_lossy() when constructing chunk filenames, which automatically rewrites invalid byte sequences into the UTF-8 replacement character (U+FFFD). This behavior diverges from GNU split, which preserves raw pathname bytes intact. In environments utilizing non-UTF-8 encodings, this vulnerability leads to the creation of files with incorrect names, potentially causing filename collisions, broken automation, or the misdirection of output data.

CVE-2026-35375 Affected Coreutils Versions

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

References

NVD — CVE-2026-35375 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35375
Coreutils Source Repository REPOSITORY
https://github.com/uutils/coreutils/pull/11397
Security Fix Commit FIX COMMIT
https://github.com/uutils/coreutils/commit/d2b9550fe821a9a10bf0cec057509211357363f1
Coreutils Source Repository REPOSITORY
https://github.com/uutils/coreutils
Coreutils Release RELEASE
https://github.com/uutils/coreutils/releases/tag/0.8.0

Frequently Asked Questions

What is CVE-2026-35375?
CVE-2026-35375 is a security vulnerability in Coreutils involving uutils coreutils has an Improper Handling of Unicode Encoding Issue under CWE-176: Improper Handling of Unicode Encoding.
Which Coreutils versions are affected?
Affected versions include releases prior to 0.8.0 across affected packages: coreutils.
What version fixes CVE-2026-35375?
Upgrading to 0.8.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is coreutils affected?
Yes, coreutils 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-2026-35375?
CVE-2026-35375 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-2026-35375?
CVE-2026-35375 is classified under CWE-176: Improper Handling of Unicode Encoding (The product does not properly handle when an input contains Unicode encoding.).
How can I check crates.io dependencies for CVE-2026-35375?
Run the dependency tree command: 'inspect dependencies for coreutils'. 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-vx9m-xjwf-8cqm",
  "modified" : "2026-04-30T17:56:29Z",
  "published" : "2026-04-22T18:31:46Z",
  "aliases" : [ "CVE-2026-35375" ],
  "summary" : "uutils coreutils has an Improper Handling of Unicode Encoding Issue",
  "details" : "A logic error in the split utility of uutils coreutils causes the corruption of output filenames when provided with non-UTF-8 prefix or suffix inputs. The implementation utilizes to_string_lossy() when constructing chunk filenames, which automatically rewrites invalid byte sequences into the UTF-8 replacement character (U+FFFD). This behavior diverges from GNU split, which preserves raw pathname bytes intact. In environments utilizing non-UTF-8 encodings, this vulnerability leads to the creation of files with incorrect names, potentially causing filename collisions, broken automation, or the misdirection of output data.",
  "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" : "coreutils"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.8.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35375"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/pull/11397"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/commit/d2b9550fe821a9a10bf0cec057509211357363f1"
  }, {
    "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-176" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-30T17:56:29Z",
    "nvd_published_at" : "2026-04-22T17:16:42Z"
  }
}