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1 vulnerability by protobufjs

CVE-2026-41242 (GCVE-0-2026-41242)

Vulnerability from cvelistv5 – Published: 2026-04-18 16:18 – Updated: 2026-04-18 16:18
VLAI?
Title
protobufjs has an arbitrary code execution issue
Summary
protobufjs compiles protobuf definitions into JavaScript (JS) functions. In versions prior to 8.0.1 and 7.5.5, attackers can inject arbitrary code in the "type" fields of protobuf definitions, which will then execute during object decoding using that definition. Versions 8.0.1 and 7.5.5 patch the issue.
Severity ?
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
Impacted products
Vendor Product Version
protobufjs protobuf.js Affected: < 7.5.5
Affected: >= 8.0.0-experimental, < 8.0.1
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "protobuf.js",
          "vendor": "protobufjs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.5.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0-experimental, \u003c 8.0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "protobufjs compiles protobuf definitions into JavaScript (JS) functions. In versions prior to 8.0.1 and 7.5.5, attackers can inject arbitrary code in the \"type\" fields of protobuf definitions, which will then execute during object decoding using that definition. Versions 8.0.1 and 7.5.5 patch the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-18T16:18:10.652Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-xq3m-2v4x-88gg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-xq3m-2v4x-88gg"
        },
        {
          "name": "https://github.com/protobufjs/protobuf.js/commit/535df444ac060243722ac5d672db205e5c531d75",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/protobufjs/protobuf.js/commit/535df444ac060243722ac5d672db205e5c531d75"
        },
        {
          "name": "https://github.com/protobufjs/protobuf.js/commit/ff7b2afef8754837cc6dc64c864cd111ab477956",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/protobufjs/protobuf.js/commit/ff7b2afef8754837cc6dc64c864cd111ab477956"
        },
        {
          "name": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.5"
        },
        {
          "name": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.0.1",
          "tags": [
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          "url": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.0.1"
        }
      ],
      "source": {
        "advisory": "GHSA-xq3m-2v4x-88gg",
        "discovery": "UNKNOWN"
      },
      "title": "protobufjs has an arbitrary code execution issue"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-41242",
    "datePublished": "2026-04-18T16:18:10.652Z",
    "dateReserved": "2026-04-18T03:47:03.135Z",
    "dateUpdated": "2026-04-18T16:18:10.652Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
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