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Vulnerability record · CVE-2026-91837 · published 25 September 2026

CVE-2026-91837: OS command injection vulnerability

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.

7.8 CVSS 3.1 High EPSS 0.14% · top 97.5% CWE-78 · OS command injection Received
7.8CVSS 3.1 base score
0.14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
25 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-91837
https://bugzilla.redhat.com/show_bug.cgi?id=2533634
https://gitlab.gnome.org/GNOME/network-manager-iodine/-/work_items/4

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Source: NIST National Vulnerability Database (record CVE-2026-91837), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.