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CVE-2026-35364 — Vulnerability in coreutils — CVE Details

MEDIUM

uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition

Published April 22, 2026Updated September 10, 2026Source: osv

Summary

A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mv utility of uutils coreutils during cross-device operations. The utility removes the destination path before recreating it through a copy operation. A local attacker with write access to the destination directory can exploit this window to replace the destination with a symbolic link. The subsequent privileged move operation will follow the symlink, allowing the attacker to redirect the write and overwrite an arbitrary target file with contents from the source.

Advisory Timeline

  • First published April 22, 2026 (173 days ago).
  • Last revised September 10, 2026 — 140 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
coreutils
crates.io
All versionsRange-based data available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 6.3 score means for each attack dimension.

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

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

References

Frequently Asked Questions

What is CVE-2026-35364?
uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 6.3/10).
How do I check if my project is affected by CVE-2026-35364?
CVE-2026-35364 affects coreutils. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-35364 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
6.3

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-m976-87wm-48fm

Related CVEs

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    HIGH

    uutils coreutils has a Time-of-Check to Time-of-Use (TOCTOU) race condition

  • CVE-2026-35368
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  • CVE-2026-102821
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    Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood during a client-stalled rekey

  • CVE-2026-35374
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  • CVE-2026-102820
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    pageant: Out-of-bounds read / oversized allocation in `pageant` MemoryMap::read via a malicious Pageant agent (Windows)

  • CVE-2026-35360
    MEDIUM

    uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition

  • CVE-2026-35350
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    uutils coreutils doesn't properly handle setuid and setgid bits when ownership preservation fails

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