CVE-2026-73418
CVE-2026-73418 · NextAuth.js: getToken() throws an uncaught exception on malformed Bearer authorization headers
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NextAuth.js provides authentication for Next.js. Prior to @auth/core 0.41.3 and next-auth 4.24.15 and 5.0.0-beta.32, the exported getToken() helper in the next-auth/jwt and @auth/core/jwt modules can throw an uncaught exception when it reads a malformed Authorization: Bearer header. When no session cookie is present, getToken() URL-decodes the bearer value before validating it, and malformed percent encoding causes decodeURIComponent() to throw instead of treating the token as invalid. Because getToken() is commonly called in API routes, middleware, and server-side request handlers, a single unauthenticated request can trigger an unhandled exception in code paths that authenticate requests, causing a per-request denial of service without exposing tokens, sessions, or other data and without bypassing authentication. This issue is fixed in @auth/core 0.41.3 and next-auth 4.24.15 and 5.0.0-beta.32.
CVSS 7.5 · Hoch · EPSS 0,9% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: node
Betroffene Produkte und Versionen
next-auth
- Softwareversionen
- >= 4.0.6, <= 4.24.14: Betroffen
- >= 5.0.0-beta.0, <= 5.0.0-beta.31: Betroffen
Keine Korrektur veröffentlicht
core
- Softwareversionen
- >= 0.1.0, < 0.41.3: Betroffen
Keine Korrektur veröffentlicht
@auth/core npm
- Betroffene Versionsbereiche
- SEMVER: ≥ 0.1.0, < 0.41.3
Auf 0.41.3 aktualisieren
next-auth npm
- Betroffene Versionsbereiche
- SEMVER: ≥ 5.0.0-beta.0, < 5.0.0-beta.32
Auf 5.0.0-beta.32 aktualisieren
next-auth npm
- Betroffene Versionsbereiche
- SEMVER: ≥ 4.0.6, < 4.24.15
Auf 4.24.15 aktualisieren
Originalquellen
- https://github.com/nextauthjs/next-auth/security/advisories/GHSA-xmf8-cvqr-rfgj
- https://github.com/nextauthjs/next-auth/pull/13469
- https://github.com/nextauthjs/next-auth/commit/5bca2399a79ba8d116ca5179b4b1ebcd152e7f05
- https://github.com/nextauthjs/next-auth/commit/e707770f00c52b3479e43422b0200b059149ed53
- https://github.com/nextauthjs/next-auth/releases/tag/%40auth%2Fcore%400.41.3
- https://github.com/nextauthjs/next-auth/releases/tag/next-auth%404.24.15
- https://github.com/nextauthjs/next-auth/releases/tag/next-auth%405.0.0-beta.32
- https://nvd.nist.gov/vuln/detail/CVE-2026-73418