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CVE-2026-73421 NextAuth.js: Configuration errors can cause existence-based auth checks to fail open (auth object populated with an error)

🗓️ 13 Aug 2026 22:04:36Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 3 Views

NextAuth.js beta.0-beta.32 fails open when auth() returns a truthy error object for misconfigured deployments.

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15 Aug 2026 11:46Current
5.5Medium risk
Vulners AI Score5.5
CVSS 49.1
3