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nextauthjs CVE debriefs

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HIGH nextauthjs CVE published 2026-08-12

CVE-2026-73418

A vulnerability in NextAuth.js can cause an unhandled exception when reading a malformed Authorization: Bearer header, potentially leading to a denial of service. This issue arises from the exported getToken() helper in the next-auth/jwt and @auth/core/jwt modules. When no session cookie is present, getToken() URL-decodes the bearer value before validating it, and malformed percent encoding causes decodeU [truncated]