CVE-2026-45033

{
  "id": "CVE-2026-45033",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-13T16:17:00.313",
  "lastModified": "2026-10-26T17:10:03.270",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GitHub Copilot CLI brings AI-powered coding assistance directly to your command line. Prior to 1.0.43, a  security vulnerability has been identified in GitHub Copilot CLI where a malicious bare git repository nested inside a project directory can achieve arbitrary code execution when the agent performs git operations. By exploiting git's automatic bare repository discovery during directory traversal, an attacker can set core.fsmonitor or other executable config keys to run arbitrary commands without user awareness or approval. The vulnerability arises because git's core.fsmonitor config key (and 15+ similar keys such as core.hookspath, diff.external, merge.tool, etc.) can specify arbitrary shell commands that git will execute as part of normal operations like status, diff, or rev-parse. This vulnerability is fixed in 1.0.43."
    },
    {
      "lang": "es",
      "value": "GitHub Copilot CLI trae asistencia de codificación impulsada por IA directamente a tu línea de comandos. Antes de la versión 1.0.43, se ha identificado una vulnerabilidad de seguridad en GitHub Copilot CLI donde un repositorio git ’bare’ malicioso anidado dentro de un directorio de proyecto puede lograr ejecución de código arbitrario cuando el agente realiza operaciones git. Al explotar el descubrimiento automático de repositorios ’bare’ de git durante el salto de directorio, un atacante puede establecer core.fsmonitor u otras claves de configuración ejecutables para ejecutar comandos arbitrarios sin el conocimiento o la aprobación del usuario. La vulnerabilidad surge porque la clave de configuración core.fsmonitor de git (y más de 15 claves similares como core.hookspath, diff.external, merge.tool, etc.) puede especificar comandos de shell arbitrarios que git ejecutará como parte de operaciones normales como status, diff o rev-parse. Esta vulnerabilidad está corregida en la versión 1.0.43."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "github",
          "product": "copilot-cli",
          "versions": [
            {
              "version": "< 1.0.43",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 8.5,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "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": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
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    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-13T18:38:29.088756Z",
          "id": "CVE-2026-45033",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-696"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
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          "negate": false,
          "cpeMatch": [
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  "references": [
    {
      "url": "https://github.com/github/copilot-cli/security/advisories/GHSA-9ccr-r5hg-74gf",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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        "Mitigation",
        "Vendor Advisory"
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}