https://seclists.org/oss-sec/2026/q2/39: libcap-2.77 (since libcap-2.04) has TOCTOU privilege escalation issue
Published Apr 7, 2026
·Updated
Affected Software
1 affected component
libcap libcap>=2.04<=2.77
Frequently Asked Questions
1
What is the severity of CVE-2026-4878?
CVE-2026-4878 is classified as a privilege escalation vulnerability.
2
How do I fix CVE-2026-4878?
To fix CVE-2026-4878, update to libcap version 2.78 or later.
3
What type of vulnerability is CVE-2026-4878?
CVE-2026-4878 is a Time-of-Check to Time-of-Use (TOCTOU) issue.
4
Which versions of libcap are affected by CVE-2026-4878?
CVE-2026-4878 affects libcap versions from 2.04 to 2.77.
5
Who reported CVE-2026-4878?
CVE-2026-4878 was reported by Andrew G. Morgan.