{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.0.0"
              },
              {
                "fixed": "1.0.16"
              },
              {
                "introduced": "1.2.0"
              },
              {
                "fixed": "1.2.22"
              },
              {
                "introduced": "1.8.0"
              },
              {
                "fixed": "1.8.10"
              },
              {
                "introduced": "1.20.0"
              },
              {
                "fixed": "1.20.24"
              },
              {
                "introduced": "1.52.0"
              },
              {
                "fixed": "1.52.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "75a61b1a02161bb10dc0f61cc23318368c8f8318"
            },
            {
              "introduced": "0"
            },
            {
              "introduced": "d357d871285b0769a8f668f89d4e510f637e030b"
            },
            {
              "introduced": "c13cea994d5830cf2ce683a89987f58eb4a7f0f7"
            },
            {
              "introduced": "9e35c9a9af5c5d2e1d88efd91aa30c7a9176a24c"
            },
            {
              "fixed": "837b58ea5dc5c6aef8a9c57e948e6853c89f6159"
            },
            {
              "fixed": "36963888b168873425dae3aa57deaea84451a588"
            },
            {
              "fixed": "75806b1359fb8946acba24f7cdcf3f26f1b40b40"
            },
            {
              "fixed": "854179811e2a83206b7301bd2ea658bdb284c72b"
            },
            {
              "fixed": "ef970e2f3bf3e219d99c949b7a91a6bb55ab6ef7"
            },
            {
              "fixed": "3704d8c9d5e5f9ed1626a8ce7627a04247cea673"
            },
            {
              "fixed": "95b6b46f48a0c9eabc79272cd313f219110ef91c"
            }
          ],
          "repo": "https://github.com/nm-l2tp/networkmanager-l2tp",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "fedora",
    "cwe_ids": [
      "CWE-88"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19624.json"
  },
  "details": "A flaw was found in NetworkManager-l2tp. The plugin writes attacker-controlled VPN connection properties (vpn.data and vpn.secrets values) unescaped into a generated ipsec.conf file that pluto loads as root. A local unprivileged user can create and activate their own L2TP VPN profile containing a newline-injected leftupdown directive; pluto executes that command as root when the IKE security association is established, resulting in local privilege escalation. This is the same bug class as CVE-2018-10900 (NetworkManager-vpnc).",
  "id": "CVE-2026-19624",
  "modified": "2026-09-16T03:30:57.922909508Z",
  "published": "2026-09-14T19:19:43.736Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://bodhi.fedoraproject.org/updates/?packages=NetworkManager-l2tp"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19624.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nm-l2tp/NetworkManager-l2tp/releases"
    },
    {
      "type": "ADVISORY",
      "url": "https://linnemanlabs.com/posts/nm-l2tp-newline-to-root/"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19624"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nm-l2tp/NetworkManager-l2tp/commit/3704d8c9d5e5f9ed1626a8ce7627a04247cea673"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nm-l2tp/NetworkManager-l2tp/commit/95b6b46f48a0c9eabc79272cd313f219110ef91c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nm-l2tp/NetworkManager-l2tp"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "NetworkManager-l2tp: local privilege escalation via ipsec.conf injection"
}