{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.6.0"
              },
              {
                "fixed": "2.6.21"
              },
              {
                "introduced": "2.7"
              },
              {
                "fixed": "2.7.5"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "b999466418dddb89721be5455f03bacd9b221b1d"
            },
            {
              "fixed": "4dee614e4e799d6d4a20bffabd902291c86406f2"
            },
            {
              "introduced": "ee1577744fb09af760dc319d57746e6abc55db85"
            },
            {
              "fixed": "b25bb2a8bda814edab39b4246d4e296330a7a29e"
            }
          ],
          "repo": "https://github.com/openvpn/openvpn",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "OpenVPN",
    "cwe_ids": [
      "CWE-617"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/13xxx/CVE-2026-13122.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "2.6.0"
          },
          {
            "last_affected": "2.6.20"
          },
          {
            "introduced": "2.7_alpha1"
          },
          {
            "last_affected": "2.7.4"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "2.6.0"
          },
          {
            "fixed": "2.6.20"
          },
          {
            "introduced": "2.7_alpha1"
          },
          {
            "fixed": "2.7.4"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled",
  "id": "CVE-2026-13122",
  "modified": "2026-07-11T03:53:31.359836056Z",
  "published": "2026-07-06T14:32:29.371Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://community.openvpn.net/Security%20Announcements/CVE-2026-13122"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/13xxx/CVE-2026-13122.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13122"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ]
}