PT-2026-34481 · Unknown · Uutils Coreutils

Zellic · Published 2026-04-22 · Updated 2026-05-04 · CVE-2026-35345

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions uutils coreutils (affected versions not specified)

Description A flaw in the tail utility occurs when using the '--follow=name' option. The implementation continues to monitor a path even after it has been replaced by a symbolic link, which leads to the output of the target file's contents. A local attacker with write access to a monitored directory can replace a log file with a symbolic link to a sensitive system file, such as '/etc/shadow', causing the utility to disclose the contents of that file if it is being monitored by a privileged user.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Link Following

Time Of Check To Time Of Use

Weakness Enumeration

CWE-59

CWE-367

Related Identifiers

CVE-2026-35345

GHSA-XF75-659H-CGG5

Affected Products

Uutils Coreutils

References · 11

• 🔥 https://github.com/uutils/coreutils/issues/10328 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-35345 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35345 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-35345 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-35345 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-35345 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-35345 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-xf75-659h-cgg5 · Vendor Advisory
• https://github.com/uutils/coreutils · Note
• https://t.me/cveNotify/162081 · Telegram Post
• https://twitter.com/CVEnew/status/2047012110484533248 · Twitter Post