CVE-2026-91840 [HIGH] – A flaw was found in NetworkManager-vpnc. This vulnerability allows a local unprivileged us

A flaw was found in NetworkManager-vpnc. This vulnerability allows a local unprivileged user to escalate privileges to root. By injecting a newline character into the VPN username field, an attacker can manipulate the vpnc configuration to execute an arbitrary program with root privileges when the malicious VPN connection is activated.