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High

DEBIAN-CVE-2026-91838

Type: advisorySource: OSV1 source record

A flaw was found in NetworkManager-sstp, the SSTP VPN plugin for NetworkManager. A local unprivileged user can exploit this vulnerability by embedding special characters, known as shell metacharacters, into VPN connection profile fields such as CA certificate or proxy settings. These unescaped characters are then processed by the `pppd` daemon, which runs with root privileges, allowing the attacker to execute arbitrary commands with elevated permissions when a malicious VPN connection is activated.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-91838

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-91838

network-manager-sstp

Source reference: /affected/0/package/name

Affected versions
1.3.0-2

Source reference: /affected/0/versions

1.3.1-1

Source reference: /affected/0/versions

1.3.1-2

Source reference: /affected/0/versions

1.3.2-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

network-manager-sstp

Source reference: /affected/1/package/name

Affected versions
1.3.2-1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "network-manager-sstp",
      "purl": "pkg:deb/debian/network-manager-sstp?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.3.0-2",
      "1.3.1-1",
      "1.3.1-2",
      "1.3.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91838.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "network-manager-sstp",
      "purl": "pkg:deb/debian/network-manager-sstp?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.3.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91838.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]
Related CVEs
CVE-2026-91838

Source reference: /upstream

Publisher severity

high

Source reference: /severity/0/score

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-91838 · High

NetworkManager-sstp

Event
#69067 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement