CVE-2026-35345
uutils coreutils tail Privileged Information Disclosure via Symlink Replacement Race
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 Unlike GNU tail, the uutils implementation continues to monitor a path after it has been replaced by a symbolic link, subsequently outputting the contents of the link's target.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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
5.3
uutils coreutils tail Privileged Information Disclosure via Symlink Replacement Race
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 Unlike GNU tail, the uutils implementation continues to monitor a path after it has been replaced by a symbolic link, subsequently outputting the contents of the link's target.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.
- Record
CVE-2026-35345- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-367, CWE-59
- Updated
- 2026-11-02
EUVDEUVD-2026-24977
5.3
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 Unlike GNU tail, the uutils implementation continues to monitor a path after it has been replaced by a symbolic link, subsequently outputting the contents of the link's target.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.
- Record
EUVD-2026-24977- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-xf75-659h-cgg5
5.3
uutils coreutils has a Link Following Issue
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.
- Record
GHSA-xf75-659h-cgg5- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-59
- Updated
- 2026-11-02
NVD
5.3
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.
- Record
CVE-2026-35345- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-59, CWE-367
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-35345
5.3
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.
- Record
DEBIAN-CVE-2026-35345- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-xf75-659h-cgg5
5.3
uutils coreutils has a Link Following Issue
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.
- Record
GHSA-xf75-659h-cgg5- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-59
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-35345
5.3
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.
- Record
UBUNTU-CVE-2026-35345- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
coreutilscrates.io |
through 0.8.0 | None known |
rust-coreutilsDebian:12 |
All versions, plus listed versions 0.0.17-20.0.17-30.0.17-40.0.17-50.0.17-6 Show 39 moreShow less0.0.19-10.0.19-20.0.19-30.0.20-10.0.21-10.0.22-10.0.23-10.0.23-20.0.23-30.0.24-10.0.24-20.0.26-10.0.26-20.0.26-30.0.26-40.0.26-50.0.27-10.0.27-20.0.27-30.0.30-10.0.30-20.0.30-30.0.30-3~exp10.0.30-40.10.0-10.11.0-10.11.0-20.12.0-10.6.0-10.7.0-10.8.0-10.8.0-20.8.0-30.8.0-40.8.0-50.8.0-60.9.0-10.9.0-20.9.0-3 |
None known |
rust-coreutilsDebian:13 |
All versions, plus listed versions 0.0.30-20.0.30-30.0.30-3~exp10.0.30-40.10.0-1 Show 14 moreShow less0.11.0-10.11.0-20.12.0-10.6.0-10.7.0-10.8.0-10.8.0-20.8.0-30.8.0-40.8.0-50.8.0-60.9.0-10.9.0-20.9.0-3 |
None known |
rust-coreutilsDebian:14 |
before 0.10.0-1, plus listed versions 0.0.30-20.0.30-30.0.30-3~exp10.0.30-40.6.0-1 Show 10 moreShow less0.7.0-10.8.0-10.8.0-20.8.0-30.8.0-40.8.0-50.8.0-60.9.0-10.9.0-20.9.0-3 |
0.10.0-1 |
rust-coreutilsUbuntu:24.04:LTS |
All versions, plus listed versions 0.0.20-10.0.22-10.0.23-10.0.23-20.0.23-30.0.24-10.0.24-2 |
None known |
rust-coreutilsUbuntu:25.10 |
All versions, plus listed versions 0.0.30-10.0.30-20.0.30-2ubuntu20.1.0-0ubuntu10.1.0+git20250711.2ba3a33-0ubuntu1 Show 11 moreShow less0.1.0+git20250711.2ba3a33-0ubuntu20.1.0+git20250711.2ba3a33-0ubuntu30.1.0+git20250711.2ba3a33-0ubuntu40.1.0+git20250801.cf79675-0ubuntu10.1.0+git20250813.4af2a84-0ubuntu20.1.0+git20250813.4af2a84-0ubuntu40.1.0+git20250813.4af2a84-0ubuntu60.1.0+git20250813.4af2a84-0ubuntu70.2.2-0ubuntu10.2.2-0ubuntu20.2.2-0ubuntu2.1 |
None known |
rust-coreutilsUbuntu:26.10 |
All versions, plus listed versions 0.8.0-0ubuntu30.8.0-0ubuntu40.9.0-2ubuntu20.10.0-1ubuntu10.10.0-1ubuntu2 Show 5 moreShow less0.10.0-1ubuntu30.11.0-2ubuntu10.11.0-2ubuntu20.12.0-1ubuntu10.12.0-1ubuntu2 |
None known |
rust-coreutilsUbuntu:26.04:LTS |
All versions, plus listed versions 0.2.2-0ubuntu20.2.2-0ubuntu40.5.0-0ubuntu10.5.0-0ubuntu20.6.0-0ubuntu10.7.0-0ubuntu10.8.0-0ubuntu30.10.0-1ubuntu2~26.04.1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-35345 is a medium vulnerability (CVSS 5.3) in Uutils Coreutils, published April 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.10%, the 0th percentile. Fixed in rust-coreutils 0.10.0-1.