---
id: CVE-2026-35370
aliases:
  - GHSA-47c7-qrm7-mqw7
title: 'id: groups= computed from real GID instead of effective GID'
summary: 'id: groups= computed from real GID instead of effective GID'
severity: medium
cvss: 4.4
cwe:
  - CWE-273
  - CWE-863
vendor: uu_id
product: uu_id
ecosystem: rust
affected:
  - uu_id < 0.6.0
patched:
  - uu_id 0.6.0
published: '2026-07-06'
updated: '2026-07-06'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-47c7-qrm7-mqw7'
references:
  - url: >-
      https://github.com/uutils/coreutils/security/advisories/GHSA-47c7-qrm7-mqw7
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-35370'
  - url: 'https://github.com/uutils/coreutils/issues/10006'
  - url: 'https://github.com/advisories/GHSA-47c7-qrm7-mqw7'
tags:
  - ghsa
  - rust
epss: 0.00127
epssPercentile: 0.02007
ingestedAt: '2026-07-06T20:46:12.675Z'
---

## Overview

The id utility in uutils coreutils miscalculates the groups= section of its output. The implementation uses a user's real GID instead of their effective GID to compute the group list, leading to potentially divergent output compared to GNU coreutils. Because many scripts and automated processes rely on the output of id to make security-critical access-control or permission decisions, this discrepancy can lead to unauthorized access or security misconfigurations.

---
_Zellic finding 3.72. Reported in the Zellic *uutils coreutils Program Security Assessment* (for Canonical, Jan 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`._

## Affected packages

- `uu_id < 0.6.0`

## Remediation

Upgrade to a patched release:

- `uu_id 0.6.0`