CVE-2026-35371: Uu id Pretty-print Uses Effective GID Instead Vulnerability

LOW
Advisory Identifier: GHSA-xv5w-cw7x-72gj
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CVSS 3.3
CWE-451
Published
Advisory Summary

CVE-2026-35371 is a LOW (CVSS 3.3) pretty-print uses effective gid instead vulnerability (CWE-451: User Interface (UI) Misrepresentation of Critical Information) affecting Uu id libraries in the crates.io ecosystem. The issue involves pretty-print uses effective gid instead of effective uid for name lookup. Remediation is available by upgrading affected packages to version 0.6.0.

CVE-2026-35371 at a Glance

CVE Identifier CVE-2026-35371
GHSA Identifier GHSA-xv5w-cw7x-72gj
Severity LOW
CVSS v3.1 Base Score 3.3
CWE Classification CWE-451: User Interface (UI) Misrepresentation of Critical Information
Affected Product Uu id
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-2026-35371

To remediate this vulnerability, upgrade all affected Uu id 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_id fixed: 0.6.0 
Upgrade uu_id 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 uu_id

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-35371, inspect your project dependencies for Uu id:

inspect dependencies for uu_id

Analyze the terminal output to locate any version of Uu id 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-451: User Interface (UI) Misrepresentation of Critical Information, where the user interface (ui) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. this is often a component in phishing attacks. In Uu id, 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

The id utility in uutils coreutils exhibits incorrect behavior in its "pretty print" output when the real UID and effective UID differ. The implementation incorrectly uses the effective GID instead of the effective UID when performing a name lookup for the effective user. This results in misleading diagnostic output that can cause automated scripts or system administrators to make incorrect decisions regarding file permissions or access control. --- _Zellic finding 3.73. Reported in the Zellic *uutils coreutils Program Security Assessment* (for Canonical, Jan 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`._

CVE-2026-35371 Affected Uu id Versions

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

References

GitHub Advisory / Wiki ADVISORY
https://github.com/uutils/coreutils/security/advisories/GHSA-xv5w-cw7x-72gj
NVD — CVE-2026-35371 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35371
Uu id Source Repository REPOSITORY
https://github.com/uutils/coreutils/issues/10006
Uu id Source Repository REPOSITORY
https://github.com/uutils/coreutils

Frequently Asked Questions

What is CVE-2026-35371?
CVE-2026-35371 is a security vulnerability in Uu id involving pretty-print uses effective GID instead of effective UID for name lookup under CWE-451: User Interface (UI) Misrepresentation of Critical Information.
Which Uu id versions are affected?
Affected versions include releases prior to 0.6.0 across affected packages: uu_id.
What version fixes CVE-2026-35371?
Upgrading to 0.6.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is uu_id affected?
Yes, uu_id is affected in releases prior to 0.6.0. Upgrade your dependency to 0.6.0 or later.
What is the CVSS score of CVE-2026-35371?
CVE-2026-35371 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-2026-35371?
CVE-2026-35371 is classified under CWE-451: User Interface (UI) Misrepresentation of Critical Information (The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.).
How can I check crates.io dependencies for CVE-2026-35371?
Run the dependency tree command: 'inspect dependencies for uu_id'. 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-xv5w-cw7x-72gj",
  "modified" : "2026-07-06T19:55:34Z",
  "published" : "2026-07-06T19:55:34Z",
  "aliases" : [ "CVE-2026-35371" ],
  "summary" : "id: pretty-print uses effective GID instead of effective UID for name lookup",
  "details" : "The id utility in uutils coreutils exhibits incorrect behavior in its \"pretty print\" output when the real UID and effective UID differ. The implementation incorrectly uses the effective GID instead of the effective UID when performing a name lookup for the effective user. This results in misleading diagnostic output that can cause automated scripts or system administrators to make incorrect decisions regarding file permissions or access control.\n\n---\n_Zellic finding 3.73. 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_id"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.6.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/security/advisories/GHSA-xv5w-cw7x-72gj"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35371"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/uutils/coreutils/issues/10006"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/uutils/coreutils"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-451" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-06T19:55:34Z",
    "nvd_published_at" : null
  }
}