FKIE_CVE-2026-54269

Vulnerability from fkie_nvd - Published: 2026-06-22 18:16 - Updated: 2026-06-24 20:40
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 8.6.0 and 7.6.3, protobufjs accepted certain schema-derived names that could collide with properties used by protobufjs runtime helpers. The known affected names are fields named hasOwnProperty, field or oneof names such as $type when loaded through protobufjs JSON/reflection descriptors, and service methods whose generated helper name is rpcCall. When affected message or service types were used, protobufjs could read schema-controlled data where it expected an own-property helper, reflected type metadata, or the base RPC helper. This could cause deterministic exceptions or recursive calls in affected decode post-checks, verification, object conversion, reflected JSON serialization, or protobufjs RPC helper invocation. This vulnerability is fixed in 8.6.0 and 7.6.3.
References
security-advisories@github.comhttps://github.com/protobufjs/protobuf.js/security/advisories/GHSA-f38q-mgvj-vph7Vendor Advisory
Impacted products
Vendor Product Version
protobufjs_project protobufjs *
protobufjs_project protobufjs *
protobufjs_project protobufjs-cli *
protobufjs_project protobufjs-cli *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "protobuf.js",
          "vendor": "protobufjs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.6.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.6.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "63CB499F-BC12-4D70-BD4A-38BD2CE92D99",
              "versionEndExcluding": "7.6.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "287A0FDC-7F44-4088-A0B2-51859135AB3E",
              "versionEndExcluding": "8.6.0",
              "versionStartIncluding": "8.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "E1117BF5-FD6A-4DDC-A5A3-681CD7FA937D",
              "versionEndExcluding": "1.3.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "77B18CCF-6A37-4D44-822B-B0102CE8F496",
              "versionEndExcluding": "2.5.1",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 8.6.0 and 7.6.3, protobufjs accepted certain schema-derived names that could collide with properties used by protobufjs runtime helpers. The known affected names are fields named hasOwnProperty, field or oneof names such as $type when loaded through protobufjs JSON/reflection descriptors, and service methods whose generated helper name is rpcCall. When affected message or service types were used, protobufjs could read schema-controlled data where it expected an own-property helper, reflected type metadata, or the base RPC helper. This could cause deterministic exceptions or recursive calls in affected decode post-checks, verification, object conversion, reflected JSON serialization, or protobufjs RPC helper invocation. This vulnerability is fixed in 8.6.0 and 7.6.3."
    }
  ],
  "id": "CVE-2026-54269",
  "lastModified": "2026-06-24T20:40:20.407",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54269",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-23T16:07:04.844722Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-22T18:16:45.350",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-f38q-mgvj-vph7"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-674"
        },
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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