Libcap Project vulnerabilities
Published CVEs affecting Libcap Project products: 1 record(s), with severity, exploitation and fixes.
CVE-2026-4878
High · 7.0
CWE-367 Apr 9, 2026
Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()
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.