protobufjs: Denial of service from crafted field names in generated code

{
  "id": "adea80b957871411f4c804c74f74048517d593b78dcd0f41c1b14fc707369157",
  "url": "https://osv.dev/vulnerability/CVE-2026-44294",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "protobufjs: Denial of service from crafted field names in generated code",
    "summary": "protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated JavaScript property accessors from schema-controlled field and oneof names. Certain control characters in field names were not escaped before being embedded into generated function bodies. A crafted schema or JSON descriptor could therefore cause generated encode, decode, verify, or conversion functions to fail during compilation. This vulnerability is fixed in 7.5.6 and 8.0.2.",
    "evidence": "osv:CVE-2026-44294",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-44294",
      "aliases": [
        "CVE-2026-44294",
        "GHSA-2pr8-phx7-x9h3"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/protobufjs/protobuf.js",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2189e5beeca6a70e4c104dfdb9fb8200bc5f81fe"
                },
                {
                  "introduced": "933e8750dcd000c16a621a7344a4beaa034c4019"
                },
                {
                  "fixed": "658b93e163d9aff8c31236c168657bab5e2d9bbc"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.5.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "8.0.0"
                      },
                      {
                        "fixed": "8.0.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "protobufjs-v7.5.5",
            "protobufjs-v8.0.1",
            "protobufjs-cli-v2.0.1",
            "protobufjs-v7.5.4",
            "protobufjs-v8.0.0",
            "protobufjs-cli-v2.0.0",
            "protobufjs-v7.5.3",
            "protobufjs-v7.5.2",
            "protobufjs-v7.5.1",
            "protobufjs-v7.5.0",
            "protobufjs-cli-v1.2.0",
            "protobufjs-v7.4.0",
            "protobufjs-cli-v1.1.4",
            "protobufjs-v7.3.3",
            "protobufjs-cli-v1.1.3",
            "protobufjs-v7.3.2",
            "protobufjs-v7.3.1",
            "protobufjs-v7.3.0",
            "protobufjs-v7.2.6",
            "protobufjs-v7.2.5",
            "protobufjs-cli-v1.1.2",
            "protobufjs-v7.2.4",
            "protobufjs-v7.2.3",
            "protobufjs-v7.2.2",
            "protobufjs-v7.2.1",
            "protobufjs-cli-v1.1.1",
            "protobufjs-v7.2.0",
            "protobufjs-cli-v1.1.0",
            "protobufjs-v7.1.2",
            "protobufjs-v7.1.1",
            "protobufjs-cli-v1.0.2",
            "protobufjs-v7.1.0",
            "protobufjs-cli-v1.0.1",
            "protobufjs-v7.0.0",
            "protobufjs-cli-v1.0.0",
            "v6.10.2",
            "v6.10.1",
            "v6.10.1-beta.0",
            "v6.10.0",
            "v6.10.0-beta.2",
            "v6.10.0-beta.1",
            "v6.10.0-beta.0",
            "v6.9.0",
            "v6.9.0-beta.0",
            "6.8.8",
            "6.8.7",
            "6.8.6",
            "6.8.5",
            "6.8.4",
            "6.8.3",
            "6.8.2",
            "6.8.1",
            "6.8.0",
            "6.7.3",
            "6.7.2",
            "6.7.1",
            "6.7.0",
            "6.6.5",
            "6.6.4",
            "6.6.3",
            "6.6.2",
            "6.6.1",
            "6.6.0",
            "6.5.3",
            "6.5.2",
            "6.5.1",
            "6.5.0",
            "6.4.6",
            "6.4.5",
            "6.4.4",
            "6.4.3",
            "6.4.2",
            "6.4.1",
            "6.4.0",
            "6.3.1",
            "6.3.0",
            "6.2.1",
            "6.2.0",
            "6.1.1",
            "6.1.0",
            "6.0.2",
            "6.0.1",
            "6.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44294.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:47.252880392Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44294.json",
        "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-2pr8-phx7-x9h3",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-44294"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44294.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-44294",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 515022,
  "published_at": "2026-05-13T14:44:30.474+00:00"
}