{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.1.62"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7d1eb319cfabe7280e70699946c9a48579fa2f30"
            }
          ],
          "repo": "https://github.com/aarnott/nerdbank.messagepack",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-2cwq-pwfr-wcw3"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44375.json"
  },
  "details": "Nerdbank.MessagePack is a NativeAOT-compatible MessagePack serialization library. Prior to 1.1.62, Nerdbank.MessagePack contains an uncontrolled stack allocation vulnerability in DateTime decoding. A malicious MessagePack payload can declare an oversized timestamp extension length, causing the reader to allocate an attacker-controlled number of bytes on the stack. This can trigger a StackOverflowException, which is not catchable by user code and terminates the process. This vulnerability is fixed in 1.1.62.",
  "id": "CVE-2026-44375",
  "modified": "2026-07-08T05:38:03.309224325Z",
  "published": "2026-05-14T14:32:09.506Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/AArnott/Nerdbank.MessagePack/releases/tag/v1.1.62"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/AArnott/Nerdbank.MessagePack/security/advisories/GHSA-2cwq-pwfr-wcw3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44375.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44375"
    },
    {
      "type": "FIX",
      "url": "https://github.com/AArnott/Nerdbank.MessagePack/commit/7d1eb319cfabe7280e70699946c9a48579fa2f30"
    },
    {
      "type": "FIX",
      "url": "https://github.com/AArnott/Nerdbank.MessagePack/pull/941"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Nerdbank.MessagePack: Attacker-controlled stackalloc in DateTime decoding causes process-terminating StackOverflowException"
}