CVE-2026-35373: Uutils Coreutils

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Uutils Coreutils: affected versions not specified

Published 2026-04-22. Last modified 2026-06-17.