CVE-2026-35371 uutils coreutils id Misleading Identity Reporting in Pretty Print Mode

What is CVE-2026-35371?

CVE-2026-35371 is a low-severity vulnerability in Uutils coreutils, published on 22 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-451

Which versions are affected by CVE-2026-35371?

2 open source packages ship an affected version, including uu_id. It affects 1 product.

Products include Uutils Coreutils.

How do I fix CVE-2026-35371?

Upgrade uu_id to 0.6.0 or later.

Is CVE-2026-35371 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35371 exists.

Other vulnerabilities in Uutils coreutils

• CVE-2026-35338 uutils coreutils chmod Path Traversal Bypass of --preserve-root High 7.3
• CVE-2026-35368 uutils coreutils chroot Local Privilege Escalation and chroot Escape in via Name Service Switch (NSS) Injection High 7.2
• CVE-2026-35341 uutils coreutils mkfifo Unauthorized Permission Change on Existing Files High 7.1
• CVE-2026-35352 uutils coreutils mkfifo Privilege Escalation via TOCTOU Race Condition High 7.0
• CVE-2026-35349 uutils coreutils Path-Based Safety Bypass with --preserve-root Medium 6.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-35371, GHSA-xv5w-cw7x-72gj, UBUNTU-CVE-2026-35371.