{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "5.8.7"
              },
              {
                "introduced": "6.0.0"
              },
              {
                "fixed": "6.0.5"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "28bd46f1f22ffacf859504768e7284591ccba126"
            },
            {
              "introduced": "94a546d5e68a484daf64373c047ff5f3c8a927b7"
            },
            {
              "fixed": "900efef637444918d29554160d799404d5420a89"
            }
          ],
          "repo": "https://github.com/kamailio/kamailio",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6m86-m342-g48m"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39864.json"
  },
  "details": "Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.0.5 and 5.8.7, an out-of-bounds read in the auth module of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted SIP packet if a successful user authentication without a database backend is followed by additional user identity checks. This vulnerability is fixed in 6.0.5 and 5.8.7.",
  "id": "CVE-2026-39864",
  "modified": "2026-07-08T05:37:27.249757818Z",
  "published": "2026-04-08T19:58:08.565Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39864.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/kamailio/kamailio/security/advisories/GHSA-6m86-m342-g48m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39864"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Kamailio Auth: Processing Vulnerability For Additional Authenticated User Identity Checks"
}