CVE-2026-21516

Improper neutralization of special elements used in a command ('command injection') in Github Copilot allows an unauthorized attacker to execute code over a network.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21516	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:github_copilot:*:*:*:*:*:jetbrains:*:*

History

No history.

Information

Published : 2026-02-10 18:16

Updated : 2026-06-17 10:18

NVD link : CVE-2026-21516

Mitre link : CVE-2026-21516

CVE.ORG link : CVE-2026-21516

JSON object : View

Products Affected

microsoft

github_copilot

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

{"id": "CVE-2026-21516", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21516", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-02-11T04:55:52.936237Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "GitHub Copilot Plugin for JetBrains IDEs", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.5.63", "versionType": "custom"}]}]}], "published": "2026-02-10T18:16:33.960", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21516", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-77"}]}], "descriptions": [{"lang": "en", "value": "Improper neutralization of special elements used in a command ('command injection') in Github Copilot allows an unauthorized attacker to execute code over a network."}, {"lang": "es", "value": "Neutralizaci\u00f3n inadecuada de elementos especiales utilizados en un comando ('inyecci\u00f3n de comandos') en Github Copilot permite a un atacante no autorizado ejecutar c\u00f3digo a trav\u00e9s de una red."}], "lastModified": "2026-06-17T10:18:45.967", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:github_copilot:*:*:*:*:*:jetbrains:*:*", "vulnerable": true, "matchCriteriaId": "13150737-5808-4F8A-B181-86C3AA6A1ACA", "versionEndExcluding": "1.5.63-243"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}