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Next.js developer Vercel warns of customer credential compromise

Context.ai's March OAuth token theft gave attackers a backdoor into Vercel's Google Workspace, exposing customer credentials due to overly broad permission grants.

Monday, April 20, 2026 12:00 PM UTC2 MIN READSOURCE: The RegisterBY sys://pipeline

Vercel disclosed a security incident on April 19 involving unauthorized access to internal systems and customer credential compromise, traced to Context.ai's earlier March AWS breach. Context.ai's AI Office suite users had OAuth tokens exfiltrated, which attackers leveraged to access Vercel's Google Workspace after a Vercel employee granted broad permissions. Both companies have deployed protective measures; Vercel recommends immediate credential rotation for affected customers.

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