{"data":{"id":"4f0ae95e-4386-427e-b417-0d7a5445969c","title":"Microsoft almost gave away the keys to everyone’s Azure Cosmos DBs","summary":"Microsoft had a critical vulnerability in Azure Cosmos DB (a NoSQL database that stores data in the cloud), specifically in its Gremlin API (a tool for managing graph-structured data). Attackers who discovered it could have stolen the Cosmos Master Key, giving them read and write access to any database and a list of all databases on the service. Microsoft patched the issue after being notified by security researchers.","solution":"Microsoft deployed a hot fix within two days of learning about the vulnerability. The company then spent eight months re-engineering the infrastructure to remove the Cosmos Master Key and introduce new guardrails to Cosmos DB to prevent similar attacks.","labels":["security"],"sourceUrl":"https://www.csoonline.com/article/4203921/microsoft-almost-gave-away-the-keys-to-everyones-azure-cosmos-dbs.html","publishedAt":"2026-07-31T12:53:47.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"critical","attackType":["data_extraction"],"issueType":"news","affectedPackages":null,"affectedVendors":["Microsoft"],"affectedVendorsRaw":["Microsoft","Azure Cosmos DB"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"patchAvailable":null,"disclosureDate":"2026-07-31T12:53:47.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["confidentiality","integrity"],"aiComponentTargeted":null,"llmSpecific":false,"classifierConfidence":0.75,"researchCategory":null,"atlasIds":null}}