FKIE_CVE-2026-49402

Vulnerability from fkie_nvd - Published: 2026-06-23 18:18 - Updated: 2026-06-26 17:33
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.10, Deno's node:child_process implementation provided an escapeShellArg() helper used when callers passed shell: true to spawn / spawnSync / exec and friends. On Windows, the helper failed to quote arguments that contained cmd.exe metacharacters and did not neutralize % (which cmd.exe expands even inside double-quoted strings). An attacker who controlled any portion of an argument passed to such a call could inject arbitrary additional commands into the spawned cmd.exe invocation. This vulnerability is fixed in 2.7.10.
References
security-advisories@github.comhttps://github.com/denoland/deno/security/advisories/GHSA-7xh3-mhg9-jcw8Exploit, Mitigation, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/denoland/deno/security/advisories/GHSA-7xh3-mhg9-jcw8Exploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
deno deno *
microsoft windows -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "deno",
          "vendor": "denoland",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.7.10"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FB0EEB79-222A-40A4-9608-898843B23883",
              "versionEndExcluding": "2.7.10",
              "vulnerable": true
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              "vulnerable": false
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          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.10, Deno\u0027s node:child_process implementation provided an escapeShellArg() helper used when callers passed shell: true to spawn / spawnSync / exec and friends. On Windows, the helper failed to quote arguments that contained cmd.exe metacharacters and did not neutralize % (which cmd.exe expands even inside double-quoted strings). An attacker who controlled any portion of an argument passed to such a call could inject arbitrary additional commands into the spawned cmd.exe invocation. This vulnerability is fixed in 2.7.10."
    }
  ],
  "id": "CVE-2026-49402",
  "lastModified": "2026-06-26T17:33:10.807",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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        "source": "nvd@nist.gov",
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    "ssvcV203": [
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        "ssvcData": {
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          "options": [
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            {
              "automatable": "no"
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            {
              "technicalImpact": "total"
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          "role": "CISA Coordinator",
          "timestamp": "2026-06-24T00:00:00+00:00",
          "version": "2.0.3"
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  "published": "2026-06-23T18:18:03.177",
  "references": [
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      "tags": [
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  "vulnStatus": "Analyzed",
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          "value": "CWE-78"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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