CVE-2026-35359: uutils coreutils has a Link Following issue

CVE-2026-35359 · Severity: medium · CVSS 4.7 · Published 2026-04-22

A Time-of-Check to Time-of-Use (TOCTOU) vulnerability in the cp utility of uutils coreutils allows an attacker to bypass no-dereference intent. The utility checks if a source path is a symbolic link using path-based metadata but subsequently opens it without the O_NOFOLLOW flag. An attacker with concurrent write access can swap a regular file for a symbolic link during this window, causing a privileged cp process to copy the contents of arbitrary sensitive files into a destination controlled by the attacker.

Technologies: coreutils (crates.io), Uutils Coreutils. Vendors: crates.io, Uutils.

Quick answers

Is CVE-2026-35359 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-35359 being exploited in the wild.
How severe is CVE-2026-35359?
Medium severity, with a CVSS score of 4.7, published 22 April 2026.
Which products and versions are affected?
coreutils (crates.io) SEMVER:introduced=0,last_affected=0.8.0.
Is there a fix for CVE-2026-35359?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-35359?
Check whether you run coreutils (crates.io) or Uutils Coreutils at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • coreutils (crates.io) SEMVER:introduced=0,last_affected=0.8.0
  • Uutils Coreutils

Identifiers

  • CVE-2026-35359
  • GHSA-hpfw-mqm3-33jh

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