{"data":{"id":"a6a06b03-2df5-4906-a840-1366365a4d4c","title":"CVE-2026-21520: Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view s","summary":"CVE-2026-21520 is a vulnerability in Microsoft Copilot Studio that allows an unauthenticated attacker to view sensitive information through a network-based attack. The vulnerability stems from improper handling of special characters in commands (command injection, where attackers manipulate input to execute unintended commands), and affects Copilot Studio's hosted service.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-21520","publishedAt":"2026-01-22T23:15:57.657Z","cveId":"CVE-2026-21520","cweIds":["CWE-77"],"cvssScore":"7.5","cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":null,"affectedVendors":["Microsoft"],"affectedVendorsRaw":["Microsoft Copilot Studio"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0.00087,"patchAvailable":null,"disclosureDate":null,"capecIds":["CAPEC-88"],"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality"],"aiComponentTargeted":"api","llmSpecific":false,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":null}}