CVE-2026-35375

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.

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/uutils/coreutils/pull/11397	Exploit Issue Tracking Patch
https://github.com/uutils/coreutils/releases/tag/0.8.0	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*

History

26 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Un error de lógica en la utilidad ’split’ de uutils coreutils causa la corrupción de los nombres de archivo de salida cuando se le proporcionan entradas de prefijo o sufijo que no son UTF-8. La implementación utiliza to_string_lossy() al construir nombres de archivo de fragmentos, lo que reescribe automáticamente las secuencias de bytes inválidas en el carácter de reemplazo UTF-8 (U+FFFD). Este comportamiento difiere de GNU split, que preserva los bytes de la ruta de acceso sin procesar intactos. En entornos que utilizan codificaciones que no son UTF-8, esta vulnerabilidad conduce a la creación de archivos con nombres incorrectos, lo que podría causar colisiones de nombres de archivo, automatización rota o la redirección errónea de datos de salida.

Information

Published : 2026-04-22 17:16

Updated : 2026-10-26 22:10

NVD link : CVE-2026-35375

Mitre link : CVE-2026-35375

CVE.ORG link : CVE-2026-35375

JSON object : View

Products Affected

uutils

coreutils

CWE

CWE-176

Improper Handling of Unicode Encoding

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