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Description

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.

PUBLISHED Reserved 2026-04-02 | Published 2026-04-22 | Updated 2026-04-22 | Assigner canonical




MEDIUM: 4.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-863: Incorrect Authorization

Product status

Default status
affected

Credits

Zellic finder

References

github.com/uutils/coreutils/issues/10006 exploit

github.com/uutils/coreutils/issues/10006 issue-tracking

cve.org (CVE-2026-35370)

nvd.nist.gov (CVE-2026-35370)

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