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VulnerabilityPublished Updated

CVE-2026-35370: Rust coreutils · The id utility in uutils coreutils miscalculates the groups= section of its output

Affects rust-coreutilsSource GCVE Database

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Authoritative record:CVE-2026-35370· Medium 4.4

Not known to be exploited · CVSS 4.4 Medium.

Data as of 11 Nov 2026, 12:41 UTC

CVSS 3.1 base score
4.4Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.04 LTSrust-coreutilspkg:deb/ubuntu/rust-coreutils?arch=source&distro=resoluteOther threatsAffected
  • 0.2.2-0ubuntu2 – 0.10.0-1ubuntu2~26.04.1
8 affected builds
Fixed in–
Ubuntu 25.10rust-coreutilspkg:deb/ubuntu/rust-coreutils?arch=source&distro=questingOther threatsAffected
  • 0.0.30-1 – 0.2.2-0ubuntu2.1
16 affected builds
Fixed in–
Ubuntu 24.04 LTSrust-coreutilspkg:deb/ubuntu/rust-coreutils?arch=source&distro=nobleOther threatsAffected
  • 0.0.20-1 – 0.0.24-2
7 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, users should be cautious when relying on rust-coreutils' id output for security-critical decisions and consider using alternative utilities or verifying group membership through other means.

Description

The id utility in the rust-coreutils package incorrectly calculates the groups= section of its output by using the user's real GID instead of the effective GID. This causes the output to diverge from GNU coreutils, potentially leading to incorrect group membership information. Since many scripts and automated processes rely on id's output for security-critical access control or permission decisions, this flaw can result in unauthorized access or security misconfigurations.

References

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