Eclipse OpenJ9 : Using -Xtrace to trace method arguments can lead to buffer underflow

{
  "id": "c54c491e48fdd91b06c4f60c489548161d8e36c851ae337396bf6278bf0e01e9",
  "url": "https://osv.dev/vulnerability/CVE-2026-16439",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Eclipse OpenJ9 : Using -Xtrace to trace method arguments can lead to buffer underflow",
    "summary": "In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.",
    "evidence": "osv:CVE-2026-16439",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-16439",
      "aliases": [
        "CVE-2026-16439"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:N/VI:H/VA:H/SC:N/SI:L/SA:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/eclipse-openj9/openj9",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e24e8aa9bdffadfff8564ac605b0003928dcd1aa"
                },
                {
                  "fixed": "396c827fb365c53b26586f55ec09d4727b37d9be"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.8.0"
                      },
                      {
                        "fixed": "0.60.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:eclipse:openj9:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.8.0"
                      },
                      {
                        "fixed": "0.60.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "openj9-0.35.0-m1",
            "openj9-0.33.0-m1",
            "openj9-0.30.0-m1a",
            "openj9-0.30.0-m1",
            "openj9-0.29.0-m1",
            "openj9-0.27.0-m1",
            "openj9-0.26.0-m1",
            "openj9-0.24.0-m1",
            "openj9-0.23.0-m1",
            "openj9-0.22.0-m1",
            "openj9-0.21.0-m1",
            "openj9-0.20.0-m1",
            "openj9-0.19.0-m1",
            "openj9-0.18.0-m1",
            "openj9-0.17.0-m1",
            "openj9-0.16.0-m1",
            "openj9-0.12.0-rc1",
            "openj9-0.12.0-m2",
            "openj9-0.12.0-m1",
            "openj9-0.11.0-rc2",
            "openj9-0.11.0",
            "openj9-0.11.0-rc1",
            "openj9-0.10.0-rc1",
            "openj9-0.9.0-rc1",
            "openj9-0.8.0-rc2",
            "openj9-0.8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16439.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.352493973Z",
      "provider": "osv",
      "references": [
        "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/192",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16439.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-16439",
        "https://github.com/eclipse-openj9/openj9/pull/24394"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-124"
        ],
        "cna_assigner": "eclipse",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16439.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-16439",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489777,
  "published_at": "2026-07-21T17:28:44.409+00:00"
}