CVE-2026-13149

{
  "id": "CVE-2026-13149",
  "sourceIdentifier": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
  "published": "2026-06-30T10:16:34.560",
  "lastModified": "2026-10-25T21:10:00.770",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "brace-expansion through 5.0.6 is vulnerable to denial of service. The expand() function exhibits exponential-time complexity in the number of consecutive non-expanding '{}' brace groups. An attacker who passes a crafted string to expand(), directly or transitively, can cause significant CPU consumption and event-loop blocking. The max option does not mitigate this, as it bounds the output size rather than the recursion work."
    },
    {
      "lang": "es",
      "value": "brace-expansion hasta la 5.0.6 es vulnerable a denegación de servicio. La función expand() presenta una complejidad de tiempo exponencial en el número de grupos de llaves ’{}’ consecutivos no expansibles. Un atacante que pasa una cadena manipulada a expand(), directa o transitivamente, puede causar un consumo significativo de CPU y el bloqueo del bucle de eventos. La opción max no mitiga esto, ya que limita el tamaño de la salida en lugar del trabajo de recursión."
    }
  ],
  "affected": [
    {
      "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
      "affectedData": [
        {
          "vendor": "juliangruber",
          "product": "brace-expansion",
          "defaultStatus": "unaffected",
          "collectionURL": "https://registry.npmjs.org",
          "packageName": "brace-expansion",
          "repo": "https://github.com/juliangruber/brace-expansion",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "5.0.6",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NEGLIGIBLE",
          "Automatable": "YES",
          "Recovery": "USER",
          "valueDensity": "DIFFUSE",
          "vulnerabilityResponseEffort": "MODERATE",
          "providerUrgency": "AMBER"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-30T12:43:12.568372Z",
          "id": "CVE-2026-13149",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-407"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/juliangruber/brace-expansion/commit/c7e33ec13ac1a684c116720843ce24e208611754",
      "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df"
    },
    {
      "url": "https://www.npmjs.com/package/brace-expansion",
      "source": "22e2d327-25fe-45d7-9f0c-dcd23b7108df"
    }
  ]
}