Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton

{
  "id": "a58ff8674741122882379b749f8643579aa3b13bbf765beb5005b396c4850d9b",
  "url": "https://osv.dev/vulnerability/CVE-2026-4746",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton",
    "summary": "Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is associated with program files inflate.C. This issue affects proton: before 1.6.16.",
    "evidence": "osv:CVE-2026-4746",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-4746",
      "aliases": [
        "CVE-2026-4746"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:N/AU:Y/R:U/V:C/RE:L/U:Amber"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/timeplus-io/proton",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e5ec04647fae67c8b7d6f0981ba8b23f7e47c82a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.6.16"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.6.16"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.6.15",
            "v1.6.14",
            "v1.6.13",
            "v1.6.12",
            "v1.6.11",
            "v1.6.10",
            "v1.6.9",
            "v1.6.8",
            "v1.6.7",
            "v1.6.6",
            "v1.6.5",
            "v1.6.4",
            "v1.6.3",
            "v1.6.2",
            "v1.6.1",
            "v1.5.18",
            "v1.5.17",
            "v1.5.16",
            "v1.5.15",
            "v1.5.14",
            "v1.5.13",
            "v1.5.12",
            "v1.5.11",
            "v1.5.10",
            "v1.5.9",
            "v1.5.8",
            "v1.5.7",
            "v1.5.6",
            "v1.5.5",
            "v1.5.4",
            "v1.5.3",
            "v1.5.2",
            "v1.5.1",
            "v1.4.2",
            "v1.4.1",
            "v1.3.31",
            "v1.3.30",
            "v1.3.29",
            "v1.3.28",
            "v1.3.27",
            "v1.3.26",
            "v1.3.25",
            "v1.3.24",
            "v1.3.23",
            "halloween2023",
            "v1.3.22",
            "v1.3.21",
            "v1.3.20",
            "v1.3.19",
            "v1.3.18",
            "v1.3.17",
            "v1.3.16",
            "v1.3.15",
            "v1.3.14",
            "v1.3.13",
            "v1.3.11"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4746.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.485423088Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4746.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-4746",
        "https://github.com/timeplus-io/proton/pull/943",
        "https://github.com/timeplus-io/proton"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-787"
        ],
        "cna_assigner": "GovTech CSG",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4746.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-4746",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497634,
  "published_at": "2026-03-24T03:28:20.753+00:00"
}