Skip to main content

Boteraser | Website and Server Security Solutions

🛡️ CVE-2026-35373 — coreutils

🟢 CVSS 2.0 — Low ⚠️ Exploit Public CWE-176 OSV
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Duplicate Advisory: uutils coreutils has an Improper Handling of Unicode Encoding Issue

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-jcjr-rh8q-7xqf. This link is maintained to preserve external references.

Original Description

A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2026-35373 is classified as CWE-176: Improper Handling of Unicode Encoding. The product does not properly handle when an input contains Unicode encoding.

Affected software

CVE-2026-35373 is recorded against 2 packages.

  • coreutils
  • uu-ln

Timeline and source

Published on 22 April 2026 and last revised on 6 July 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)

Other advisories for this package

coreutils has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-176: Improper Handling of Unicode Encoding) in other software:

CVE-2026-35373 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE CWE-176
Public Exploit ⚠️ Yes
Source OSV
Published 2026-04-22
Updated 2026-08-20
Modified 2026-07-06
Fix URL N/A

Affected Packages

Software From version Fixed in
coreutils — —
uu-ln — —

Similar Threats

Exploit Protection

Are you running coreutils?

CVE-2026-35373 carries CVSS 2.0 Low rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

Check My Site For CVE-2026-35373 →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2026
✓