CVE-2026-35345 (GCVE-0-2026-35345)

Vulnerability from cvelistv5 – Published: 2026-04-22 16:07 – Updated: 2026-04-22 18:13
VLAI
Title
uutils coreutils tail Privileged Information Disclosure via Symlink Replacement Race
Summary
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 Unlike GNU tail, the uutils implementation continues to monitor a path after it has been replaced by a symbolic link, subsequently outputting the contents of the link's target.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.
Severity
5.3 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 18:13 UTC
CWE
  • CWE-367 - Time-of-Check Time-of-Use (TOCTOU) Race Condition
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
canonical CNA under the mitre root
CNA scorecard B 82/100 over 58 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Uutils coreutils guessed Create a notification for this product.
Credits
Zellic
Show details on NVD website
To clipboard 

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