Description
A logic error in the split utility of uutils coreutils causes the corruption of output filenames when provided with non-UTF-8 prefix or suffix inputs. The implementation utilizes to_string_lossy() when constructing chunk filenames, which automatically rewrites invalid byte sequences into the UTF-8 replacement character (U+FFFD). This behavior diverges from GNU split, which preserves raw pathname bytes intact. In environments utilizing non-UTF-8 encodings, this vulnerability leads to the creation of files with incorrect names, potentially causing filename collisions, broken automation, or the misdirection of output data.
Published: 2026-04-22
Score: 3.3 Low
EPSS: < 1% Very Low
KEV: No
Impact: Local Data Integrity Issue
Action: Update Utility
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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-vx9m-xjwf-8cqm uutils coreutils has an Improper Handling of Unicode Encoding Issue
History

Mon, 04 May 2026 19:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*

Mon, 27 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Uutils
Uutils coreutils
Vendors & Products Uutils
Uutils coreutils

Wed, 22 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Description A logic error in the split utility of uutils coreutils causes the corruption of output filenames when provided with non-UTF-8 prefix or suffix inputs. The implementation utilizes to_string_lossy() when constructing chunk filenames, which automatically rewrites invalid byte sequences into the UTF-8 replacement character (U+FFFD). This behavior diverges from GNU split, which preserves raw pathname bytes intact. In environments utilizing non-UTF-8 encodings, this vulnerability leads to the creation of files with incorrect names, potentially causing filename collisions, broken automation, or the misdirection of output data.
Title uutils coreutils split Local Data Integrity Issue via Lossy Filename Encoding
Weaknesses CWE-176
References
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}


Subscriptions

Uutils Coreutils
cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-04-22T17:17:35.677Z

Reserved: 2026-04-02T12:58:56.088Z

Link: CVE-2026-35375

cve-icon Vulnrichment

Updated: 2026-04-22T17:17:26.187Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-22T17:16:42.293

Modified: 2026-05-04T19:13:37.293

Link: CVE-2026-35375

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-27T19:53:28Z

Weaknesses