CVE-2026-35357: Uutils Coreutils

Medium severity, CVSS 4.7. EPSS: 0.1% chance of exploitation in the next 30 days.

The cp utility in uutils coreutils is vulnerable to an information disclosure race condition. Destination files are initially created with umask-derived permissions (e.g., 0644) before being restricted to their final mode (e.g., 0600) later in the process. A local attacker can race to open the file during this window; once obtained, the file descriptor remains valid and readable even after the permissions are tightened, exposing sensitive or private file contents.

Affected products

• Uutils Coreutils: affected versions not specified

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