GHSA-hwhf-8p2f-45wr: Duplicate Advisory Coreutils' Comm Utility Silently Corrupts Vulnerability

LOW
Share
CVSS 3.3
CWE-176
Published
Advisory Summary

GHSA-hwhf-8p2f-45wr is a LOW (CVSS 3.3) coreutils' comm utility silently corrupts vulnerability (CWE-176: Improper Handling of Unicode Encoding) affecting Duplicate Advisory libraries in the crates.io ecosystem. The issue involves coreutils' comm utility silently corrupts data by performing lossy utf-8 conversion on all output lines. Remediation is available by upgrading affected packages to version 0.6.0.

GHSA-hwhf-8p2f-45wr at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-hwhf-8p2f-45wr
Severity LOW
CVSS v3.1 Base Score 3.3
CWE Classification CWE-176: Improper Handling of Unicode Encoding
Affected Product Duplicate Advisory
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 GHSA-hwhf-8p2f-45wr

To remediate this vulnerability, upgrade all affected Duplicate Advisory 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: 0.6.0 
Upgrade coreutils to 0.6.0
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 GHSA-hwhf-8p2f-45wr, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for coreutils

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.6.0), 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 Duplicate Advisory, 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

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-6gcw-w7cp-94g9. This link is maintained to preserve external references. ### Original Description The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::from_utf8_lossy(), which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). This behavior differs from GNU comm, which processes raw bytes and preserves the original input. This results in corrupted output when the utility is used to compare binary files or files using non-UTF-8 legacy encodings.

GHSA-hwhf-8p2f-45wr Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
0.6.0
Product / Package Ecosystem Affected Versions Fixed Version
coreutils
 crates.io
< 0.6.0
0.6.0

References

NVD — GHSA-hwhf-8p2f-45wr NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35346
Duplicate Advisory Source Repository REPOSITORY
https://github.com/uutils/coreutils/issues/10192
Duplicate Advisory Source Repository REPOSITORY
https://github.com/uutils/coreutils/pull/10206
Security Fix Commit FIX COMMIT
https://github.com/uutils/coreutils/commit/b9372e509ea9b278fe13763237067a261bb8c946
Duplicate Advisory Source Repository REPOSITORY
https://github.com/uutils/coreutils
Duplicate Advisory Release RELEASE
https://github.com/uutils/coreutils/releases/tag/0.6.0

Frequently Asked Questions

What is GHSA-hwhf-8p2f-45wr?
GHSA-hwhf-8p2f-45wr is a security vulnerability in Duplicate Advisory involving coreutils' comm utility silently corrupts data by performing lossy UTF-8 conversion on all output lines under CWE-176: Improper Handling of Unicode Encoding.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 0.6.0 across affected packages: coreutils.
What version fixes GHSA-hwhf-8p2f-45wr?
Upgrading to 0.6.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is coreutils affected?
Yes, coreutils is affected in releases prior to 0.6.0. Upgrade your dependency to 0.6.0 or later.
What is the CVSS score of GHSA-hwhf-8p2f-45wr?
GHSA-hwhf-8p2f-45wr 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 GHSA-hwhf-8p2f-45wr?
GHSA-hwhf-8p2f-45wr 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 GHSA-hwhf-8p2f-45wr?
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-hwhf-8p2f-45wr",
  "modified" : "2026-07-06T19:51:03Z",
  "published" : "2026-04-22T18:31:45Z",
  "withdrawn" : "2026-07-06T19:51:03Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: coreutils' comm utility silently corrupts data by performing lossy UTF-8 conversion on all output lines",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-6gcw-w7cp-94g9. This link is maintained to preserve external references.\n\n### Original Description\nThe comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::from_utf8_lossy(), which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). This behavior differs from GNU comm, which processes raw bytes and preserves the original input. This results in corrupted output when the utility is used to compare binary files or files using non-UTF-8 legacy encodings.",
  "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" : "0.6.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35346"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/issues/10192"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/pull/10206"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/commit/b9372e509ea9b278fe13763237067a261bb8c946"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/uutils/coreutils"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/releases/tag/0.6.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-176" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-29T22:57:41Z",
    "nvd_published_at" : "2026-04-22T17:16:36Z"
  }
}