High
network-manager-iodine — security advisory
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.
- Products
- network-manager-iodine
- Affected versions
- 0.0.5-1ubuntu1, 1.2.0-1, 1.2.0-3, 1.2.0-3.1, 1.2.0-3.2, 1.2.0-3.3, 1.2.0-3.3build1, 1.2.0-3.3build2, 1.2.0-3.3build3, 1.2.0-3.4, 1.2.0-3ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-91837
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:31 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-91837
network-manager-iodine
Fixed versions: Not specified
network-manager-iodine
Fixed versions: Not specified
network-manager-iodine
Fixed versions: Not specified
network-manager-iodine
Fixed versions: Not specified
network-manager-iodine
Fixed versions: Not specified
network-manager-iodine
Fixed versions: Not specified
network-manager-iodine
Fixed versions: Not specified
Complete source record
{
"id": "e8a4f01a6bbd71ed112aaf137c1d669afe29e29bd59359866a909a8ddef3354c",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-91837",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-91837",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-91837",
"products": [
{
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"evidence": "/affected/0/package/name"
},
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{
"value": "0.0.5-1ubuntu1",
"evidence": "/affected/0/versions"
}
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{
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{
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{
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{
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},
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{
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"affected_versions": [
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{
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"evidence": "/affected/6/versions"
},
{
"value": "1.2.0-3.4",
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}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-91837",
"aliases": [
"UBUNTU-CVE-2026-91837"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
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"affected": [
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],
"package": {
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"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.0.5-1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91837.json"
},
"ecosystem_specific": {
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"package": {
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"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.2.0-1",
"1.2.0-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91837.json"
},
"ecosystem_specific": {
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{
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},
{
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{
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],
"package": {
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"purl": "pkg:deb/ubuntu/network-manager-iodine?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
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],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91837.json"
},
"ecosystem_specific": {
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},
{
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{
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},
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"ecosystem_specific": {
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
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],
"database_specific": {
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"ecosystem_specific": {
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"ecosystem": "Ubuntu:26.04:LTS"
},
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],
"modified": "2026-10-17T13:01:17.229779648Z",
"provider": "osv",
"upstream": [
"CVE-2026-91837"
],
"references": [
"https://ubuntu.com/security/CVE-2026-91837",
"https://www.cve.org/CVERecord?id=CVE-2026-91837",
"https://gitlab.gnome.org/GNOME/network-manager-iodine/-/work_items/4",
"https://blogs.gnome.org/mcatanzaro/2026/09/15/privilege-escalation-vulnerabilities-in-networkmanager-plugins/"
]
},
"related_cves": [
{
"value": "CVE-2026-91837",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361508,
"published_at": "2026-09-25T17:17:00+00:00"
}