{"data":{"id":"1476520d-0c49-41e8-814d-77ebffbdddbe","title":"CVE-2026-80098: Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges","summary":"Copilot Studio has a security flaw where it fails to properly verify cryptographic signatures (mathematical proofs that data comes from a trusted source), allowing an attacker to gain elevated privileges (higher access levels) on a network without authorization.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80098","publishedAt":"2026-09-03T23:17:20.350Z","cveId":"CVE-2026-80098","cweIds":["CWE-347"],"cvssScore":"9.3","cvssSeverity":"critical","severity":"critical","attackType":["other"],"issueType":"vulnerability","affectedPackages":null,"affectedVendors":["Microsoft"],"affectedVendorsRaw":["Microsoft Copilot Studio"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","attackVector":"network","attackComplexity":"low","privilegesRequired":"none","userInteraction":"none","exploitMaturity":"unknown","epssScore":0,"patchAvailable":null,"disclosureDate":"2026-09-03T23:17:20.350Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["integrity","confidentiality"],"aiComponentTargeted":"api","llmSpecific":false,"classifierConfidence":0.92,"researchCategory":null,"atlasIds":null}}