CVE-2026-73421

NextAuth.js provides authentication for Next.js. From next-auth 5.0.0-beta.0 until 5.0.0-beta.32, applications that gate access by checking only for the existence of the auth object returned by the auth wrapper can fail open when Auth.js has a server configuration error. In middleware, Route...

CVE-2026-73420

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 defaultNormalizer used by the email and magic-link sign-in flow validates an address before applying Unicode normalization. An address can contain a Unicode character such as...

CVE-2026-73420

CVE-2026-73420 affects NextAuth.js email/passwordless flows where the default email normalizer validates addresses before Unicode normalization. An address containing a homoglyph (e.g., U+FF20 FULLWIDTH COMMERCIAL AT) can canonicalize to a normal ASCII @ after NFKC/NFKD, causing downstream mail l...

EUVD-2026-58519

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 defaultNormalizer used by the email and magic-link sign-in flow validates an address before applying Unicode normalization. An address can contain a Unicode character such as...

CVE-2026-73421: Improper Authorization

NextAuth.js provides authentication for Next.js. From next-auth 5.0.0-beta.0 until 5.0.0-beta.32, applications that gate access by checking only for the existence of the auth object returned by the auth wrapper can fail open when Auth.js has a server configuration error. In middleware, Route...

CVE-2026-73418

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...

CVE-2026-73418

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...

@chirpy-dev/analytics (0.0.1), @chirpy-dev/bootstrapper (0.1.0) +53 more potentially affected by CVE-2026-73418 via next-auth (>=4.1.2, <=4.24.13)

next-auth NPM version =4.1.2, =0.1.0, =1.9.0, =1.9.9, =0.1.0-0, =1.5.0, =0.0.2, =1.0.0, =1.0.0, =0.0.0-experimental-20231123101256, =5.1.0 and more Source cves: CVE-2026-73418 Source advisory: OSV:GHSA-XMF8-CVQR-RFGJ...

@chirpy-dev/analytics (0.0.1), @chirpy-dev/bootstrapper (0.1.0) +53 more potentially affected by unknown CVE via next-auth (>=4.1.2, <=4.24.13)

next-auth NPM version =4.1.2, =0.1.0, =1.9.0, =1.9.9, =0.1.0-0, =1.5.0, =0.0.2, =1.0.0, =1.0.0, =0.0.0-experimental-20231123101256, =5.1.0 and more Source cves: unknown CVE Source advisory: SNYK:JS-NEXTAUTH-18306959...

Improper Check for Unusual or Exceptional Conditions

Overview next-auth is an Authentication for Next.js Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions via the getToken function. An attacker can cause the application to throw an unhandled exception and disrupt service availability by sending...

@chirpy-dev/analytics (0.0.1), @chirpy-dev/bootstrapper (0.1.0) +50 more potentially affected by unknown CVE via next-auth (>=4.10.3, <=4.24.13)

next-auth NPM version =4.10.3, =1.9.0, =0.1.0-0, =1.5.0, =0.0.2, =1.0.0, =1.0.0, =0.0.0-experimental-20231123101256, =0.0.0-experimental-20251015143743, =0.0.0-experimental-20231123101256, =4.4.0 and more Source cves: unknown CVE Source advisory: SNYK:JS-NEXTAUTH-18306876...

@chirpy-dev/analytics (0.0.1), @chirpy-dev/bootstrapper (0.1.0) +50 more potentially affected by CVE-2026-73420 via next-auth (>=4.10.3, <=4.24.13)

next-auth NPM version =4.10.3, =1.9.0, =0.1.0-0, =1.5.0, =0.0.2, =1.0.0, =1.0.0, =0.0.0-experimental-20231123101256, =0.0.0-experimental-20251015143743, =0.0.0-experimental-20231123101256, =4.4.0 and more Source cves: CVE-2026-73420 Source advisory: OSV:GHSA-7RQJ-J65F-68WH...

Incorrect Behavior Order: Validate Before Canonicalize

Overview next-auth is an Authentication for Next.js Affected versions of this package are vulnerable to Incorrect Behavior Order: Validate Before Canonicalize in the email/magic-link sign-in process. An attacker can gain unauthorized access to a victim's account by submitting an email address...

@chirpy-dev/analytics (0.0.1), @chirpy-dev/bootstrapper (0.1.0) +53 more potentially affected by unknown CVE via next-auth (>=4.0.0-beta.6, <=4.24.13)

next-auth NPM version =4.0.0-beta.6, =0.1.0, =1.9.0, =1.9.9, =0.1.0-0, =1.5.0, =0.0.2, =1.0.0, =1.0.0, =0.0.0-experimental-20231123101256, =5.1.0 and more Source cves: unknown CVE Source advisory: SNYK:JS-NEXTAUTH-18306841...

@chirpy-dev/analytics (0.0.1), @chirpy-dev/bootstrapper (0.1.0) +53 more potentially affected by CVE-2026-73419 via next-auth (>=4.0.0-beta.6, <=4.24.13)

next-auth NPM version =4.0.0-beta.6, =0.1.0, =1.9.0, =1.9.9, =0.1.0-0, =1.5.0, =0.0.2, =1.0.0, =1.0.0, =0.0.0-experimental-20231123101256, =5.1.0 and more Source cves: CVE-2026-73419 Source advisory: OSV:GHSA-X445-F3H2-J279...

Improper Verification of Source of a Communication Channel

Overview next-auth is an Authentication for Next.js Affected versions of this package are vulnerable to Improper Verification of Source of a Communication Channel via improper binding of OAuth check cookies to the provider that created them. An attacker can gain unauthorized access to a victim's...

PT-2026-71311

Name of the Vulnerable Software and Affected Versions @auth/core versions prior to 0.41.3 next-auth versions prior to 4.24.15 next-auth versions prior to 5.0.0-beta.32 Description The getToken function in the next-auth/jwt and @auth/core/jwt modules can throw an uncaught exception when processing...

PT-2026-71920

Name of the Vulnerable Software and Affected Versions next-auth versions 5.0.0-beta.0 through 5.0.0-beta.31 Description Applications using the auth wrapper to gate access by checking only for the existence of the returned object can fail open during server configuration errors. In middleware, Rou...

@chirpy-dev/analytics (0.0.1), @chirpy-dev/bootstrapper (0.1.0) +49 more potentially affected by unknown CVE via next-auth (>=4.0.0-beta.6, <=4.24.11)

next-auth NPM version =4.0.0-beta.6, =0.1.0, =1.9.0, =1.9.9, =0.1.0-0, =0.0.2, =1.0.0, =1.0.0, =0.0.0-experimental-20231123101256, =0.0.0-experimental-20251015143743, =5.6.0 and more Source cves: unknown CVE Source advisory: OSV:GHSA-5JPX-9HW9-2FX4...

Improper Neutralization

Overview next-auth is an Authentication for Next.js Affected versions of this package are vulnerable to Improper Neutralization in the email validation component. An attacker can intercept sensitive authentication emails by submitting a specially crafted email address that manipulates the parsing...