CVE-2026-35345: uutils coreutils has a Link Following Issue

CVE-2026-35345 · Severity: medium · CVSS 5.3 · Published 2026-04-22

A vulnerability in the tail utility of uutils coreutils allows for the exfiltration of sensitive file contents when using the --follow=name option. Unlike GNU tail, the uutils implementation continues to monitor a path after it has been replaced by a symbolic link, subsequently outputting the contents of the link's target. In environments where a privileged user (e.g., root) monitors a log directory, a local attacker with write access to that directory can replace a log file with a symlink to a sensitive system file (such as /etc/shadow), causing tail to disclose the contents of the sensitive file.

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

Quick answers

Is CVE-2026-35345 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-35345 being exploited in the wild.
How severe is CVE-2026-35345?
Medium severity, with a CVSS score of 5.3, 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-2026-35345?
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-2026-35345?
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-2026-35345
  • GHSA-xf75-659h-cgg5

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