Snappier: Infinite loop in SnappyStream decompression on malformed framed input

{
  "id": "ca8f4f975ef46bfe9347f5005387feb61a1af8a1541ccd3aabe9dd7e637f09ae",
  "url": "https://osv.dev/vulnerability/CVE-2026-44302",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Snappier: Infinite loop in SnappyStream decompression on malformed framed input",
    "summary": "Snappier is a high performance C# implementation of the Snappy compression algorithm. Prior to 1.3.1, Snappier.SnappyStream enters an uncatchable infinite loop when decompressing a malformed framed-format Snappy stream as small as 15 bytes. This vulnerability is fixed in 1.3.1.",
    "evidence": "osv:CVE-2026-44302",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-44302",
      "aliases": [
        "CVE-2026-44302",
        "GHSA-pggp-6c3x-2xmx"
      ],
      "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://github.com/brantburnett/snappier",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "96b68fd6f46c5693c5670fda97334ab50d752ced"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.3.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.3.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release/1.3.0-beta.2",
            "release/1.3.0",
            "release/1.3.0-beta.1",
            "release/1.2.0",
            "release/1.2.0-beta0001",
            "release/1.1.6",
            "release/1.1.5",
            "release/1.1.4",
            "release/1.1.3",
            "release/1.1.2",
            "release/1.1.1",
            "release/1.1.0",
            "release/1.0.0",
            "release/1.0.0-beta002",
            "release/1.0.0-beta001"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44302.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.143308866Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44302.json",
        "https://github.com/brantburnett/Snappier/security/advisories/GHSA-pggp-6c3x-2xmx",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-44302"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-835"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44302.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-44302",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500473,
  "published_at": "2026-05-12T21:33:07.206+00:00"
}