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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          "product": "protobuf.js",
          "vendor": "protobufjs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.5.5"
            },
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        }
      ],
      "metrics": [
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            "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",
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      "problemTypes": [
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              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
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              "type": "CWE"
            }
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      ],
      "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": [
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          "url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-xq3m-2v4x-88gg"
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        {
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          "tags": [
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          "url": "https://github.com/protobufjs/protobuf.js/commit/535df444ac060243722ac5d672db205e5c531d75"
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          "tags": [
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          ],
          "url": "https://github.com/protobufjs/protobuf.js/commit/ff7b2afef8754837cc6dc64c864cd111ab477956"
        },
        {
          "name": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.5",
          "tags": [
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          "url": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.5"
        },
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          "tags": [
            "x_refsource_MISC"
          ],
          "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",
  "vulnerability-lookup:meta": {
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  }
}


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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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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