CVE-2026-91837
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
Vulnerability in NetworkManager-iodine, the iodine VPN plugin for NetworkManager. An unprivileged local user can exploit the processing of the 'nameserver' setting when establishing an iodine VPN connection. Embedding shell metacharacters in the 'nameserver' value allows arbitrary command injection and execution with root privileges before dropping elevated permissions.
Risk Assessment
Local privilege escalation could allow an unprivileged user to gain full control over the system.
Recommendation
Update the NetworkManager-iodine plugin to a version that properly sanitizes the 'nameserver' parameter or avoids shell interpretation.
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Original NVD description (English source)
A flaw was found in NetworkManager-iodine, the iodine VPN plugin for NetworkManager. A local unprivileged user can exploit a vulnerability in how the 'nameserver' setting is processed when establishing an iodine VPN connection. By embedding shell metacharacters (special characters that can execute commands) in the 'nameserver' value, an attacker can inject and execute arbitrary commands. These commands run with root privileges before the application drops its elevated permissions, leading to local privilege escalation.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

