{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.24.15"
              },
              {
                "fixed": "0.41.3"
              },
              {
                "introduced": "5.0.0-beta.4"
              },
              {
                "fixed": "5.0.0-beta.32"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "0126f94788a263bd8420ceac9a11ed6d2c2fb958"
            },
            {
              "fixed": "d857eec560fb99c8b18d3b22a2693b849a62d1c3"
            },
            {
              "fixed": "5af7357fb40c82e0c66f940319321260ddfd44dc"
            },
            {
              "fixed": "e293b3746616660f0844347a68d09eac54b95c6f"
            },
            {
              "fixed": "5bca2399a79ba8d116ca5179b4b1ebcd152e7f05"
            },
            {
              "fixed": "9f7a97fade9b1319bb9ac19fc9828d62e0a2a852"
            }
          ],
          "repo": "https://github.com/nextauthjs/next-auth",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-x445-f3h2-j279"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-345",
      "CWE-346",
      "CWE-940"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73419.json"
  },
  "details": "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, Auth.js stores the OAuth/OIDC anti-CSRF checks state, nonce, and the PKCE verifier in global cookies that are not bound to the provider that created them. On callback, a check value minted during a sign-in started with one provider can satisfy the callback for a different provider because the stored cookie is not verified against the callback provider's identity, including the provider ID, issuer, client ID, or redirect URI. In a multi-provider application that permits account linking while logged in, when one provider's authorization request is observable and a target provider callback can be satisfied without a PKCE verifier, an attacker can lure a victim into starting a legitimate same-origin flow and link the attacker's target-provider account to the victim's Auth.js user. The linked provider grants the attacker persistent sign-in to the victim's account, while cross-site request forgery alone is insufficient. This issue is fixed in @auth/core 0.41.3 and next-auth 4.24.15 and 5.0.0-beta.32.",
  "id": "CVE-2026-73419",
  "modified": "2026-08-15T11:31:11.417514037Z",
  "published": "2026-08-12T20:23:39.174Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nextauthjs/next-auth/releases/tag/@auth/core@0.41.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nextauthjs/next-auth/releases/tag/next-auth@4.24.15"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nextauthjs/next-auth/releases/tag/next-auth@5.0.0-beta.32"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73419.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nextauthjs/next-auth/security/advisories/GHSA-x445-f3h2-j279"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73419"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nextauthjs/next-auth/commit/5bca2399a79ba8d116ca5179b4b1ebcd152e7f05"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nextauthjs/next-auth/commit/9f7a97fade9b1319bb9ac19fc9828d62e0a2a852"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nextauthjs/next-auth/pull/13469"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "NextAuth.js: OAuth state, nonce, and PKCE check cookies are not bound to the provider that created them"
}