Security advisory

{
  "id": "ca12c17ef9bbd7d970d5e20be74030ee37c6cbb4f23f4bc2821acd1aec0246a2",
  "url": "https://osv.dev/vulnerability/CVE-2026-37231",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-37231",
    "summary": "FlexRIC v2.0.0 uses a uint16_t counter for xapp_id assignment but stores the value in uint32_t message fields. After 65,530+ E42_SETUP_REQUESTs, the 16-bit counter wraps around and produces duplicate xapp_ids. The iApp (port 36422) crashes when attempting to register a duplicate ID in its internal data structure. A remote attacker can trigger this by repeatedly connecting and requesting new xApp registrations.",
    "evidence": "osv:CVE-2026-37231",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-37231",
      "aliases": [
        "CVE-2026-37231"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.eurecom.fr/mosaic5g/flexric",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1f04cc558ebc8da9de6a620762bc02f5db4ecb4a"
                },
                {
                  "last_affected": "1f04cc558ebc8da9de6a620762bc02f5db4ecb4a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mosaic5g:flexric:2.0.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "last_affected": "2.0.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.0.0",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-37231.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.179682905Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37231.json",
        "https://github.com/MinamiKotor1/oran-security-advisories-zhongnan-luo/blob/main/advisories/CVE-2026-37231.md",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-37231",
        "https://gitlab.eurecom.fr/mosaic5g/flexric"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37231.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-37231",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494635,
  "published_at": "2026-06-01T00:00:00+00:00"
}