CVE-2026-45033

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{"affected": [{"affectedData": [{"product": "copilot-cli", "vendor": "github", "versions": [{"status": "affected", "version": "< 1.0.43"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:github:copilot-cli:*:*:*:*:*:*:*:*", "matchCriteriaId": "270008DE-13F2-4341-A268-B564443F1D4A", "versionEndExcluding": "1.0.43", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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 codificaci\u00f3n impulsada por IA directamente a tu l\u00ednea de comandos. Antes de la versi\u00f3n 1.0.43, se ha identificado una vulnerabilidad de seguridad en GitHub Copilot CLI donde un repositorio git \u2019bare\u2019 malicioso anidado dentro de un directorio de proyecto puede lograr ejecuci\u00f3n de c\u00f3digo arbitrario cuando el agente realiza operaciones git. Al explotar el descubrimiento autom\u00e1tico de repositorios \u2019bare\u2019 de git durante el salto de directorio, un atacante puede establecer core.fsmonitor u otras claves de configuraci\u00f3n ejecutables para ejecutar comandos arbitrarios sin el conocimiento o la aprobaci\u00f3n del usuario. La vulnerabilidad surge porque la clave de configuraci\u00f3n core.fsmonitor de git (y m\u00e1s de 15 claves similares como core.hookspath, diff.external, merge.tool, etc.) puede especificar comandos de shell arbitrarios que git ejecutar\u00e1 como parte de operaciones normales como status, diff o rev-parse. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 1.0.43."}], "id": "CVE-2026-45033", "lastModified": "2026-10-26T17:10:03.270", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45033", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-13T18:38:29.088756Z", "version": "2.0.3"}}]}, "published": "2026-05-13T16:17:00.313", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/github/copilot-cli/security/advisories/GHSA-9ccr-r5hg-74gf"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/github/copilot-cli/security/advisories/GHSA-9ccr-r5hg-74gf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-696"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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