CVE-2026-4878
MEDIUM
NVD
CVSS Score
6.7
Severity
MEDIUM
Published
Apr 09, 2026
Vendor
unknown
Description
A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation.