FKIE_CVE-2026-123804

Vulnerability from fkie_nvd - Published: 2026-11-09 19:16 - Updated: 2026-11-09 19:16
Severity
6.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Summary
SuperTokens Core is an open source authentication server. From 7.0.0 until 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1, createNewSession can resolve a primary user before unlinkAccounts detaches a login method and then insert the session after unlink has enumerated and revoked the existing sessions. A user who controls the linked login method can exploit this race to retain a signed, database-backed, refreshable session as the former primary identity after that method is unlinked; the session persists until expiry or explicit revocation. This issue is fixed in versions 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1.
References
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/182b39454ac44649cdef22d87f296a38a0b1a602
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/378e1157dc26232a518d2c360ee60cf93c2fd8a2
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/5aec64aca6d765cde491658210e6922e291742fd
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/b1c569ed59fffe16c2f657da1754abcae47d2761
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/b44f1e1418206f411e541501c2e5b9b147add0d9
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/bb6d5f8d1b79770e3cc37f214ba94c3e36e9c3b8
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/c0b7f5eda20840f63f6b0f171d22bd49a7a609a1
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/c8b48e843b323cd749dcb17b6b81c190e7882a43
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/c950a01794cf0983ebd62412976cb80756bf5dd0
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/d456dfbc02f2f7d68be7c05d876bdaa086f9a5b5
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/commit/fc273f5157d3e96f147aa42773607d627d3b495f
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v11.0.9
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v11.1.4
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v11.2.4
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v11.3.8
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v11.4.8
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v12.0.11
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v12.1.2
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v12.2.1
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/releases/tag/v12.3.1
security-advisories@github.comhttps://github.com/supertokens/supertokens-core/security/advisories/GHSA-2pc4-vw9j-454c
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "supertokens-core",
          "vendor": "supertokens",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 11.0.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 11.0.0, \u003c 11.0.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 11.1.0, \u003c 11.1.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 11.2.0, \u003c 11.2.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 11.3.0, \u003c 11.3.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 11.4.0, \u003c 11.4.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 12.0.0, \u003c 12.0.11"
            },
            {
              "status": "affected",
              "version": "\u003e= 12.1.0, \u003c 12.1.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 12.2.0, \u003c 12.2.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 12.3.0, \u003c 12.3.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SuperTokens Core is an open source authentication server. From 7.0.0 until 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1, createNewSession can resolve a primary user before unlinkAccounts detaches a login method and then insert the session after unlink has enumerated and revoked the existing sessions. A user who controls the linked login method can exploit this race to retain a signed, database-backed, refreshable session as the former primary identity after that method is unlinked; the session persists until expiry or explicit revocation. This issue is fixed in versions 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1."
    }
  ],
  "id": "CVE-2026-123804",
  "lastModified": "2026-11-09T19:16:47.457",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-11-09T19:16:47.457",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/182b39454ac44649cdef22d87f296a38a0b1a602"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/378e1157dc26232a518d2c360ee60cf93c2fd8a2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/5aec64aca6d765cde491658210e6922e291742fd"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/b1c569ed59fffe16c2f657da1754abcae47d2761"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/b44f1e1418206f411e541501c2e5b9b147add0d9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/bb6d5f8d1b79770e3cc37f214ba94c3e36e9c3b8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/c0b7f5eda20840f63f6b0f171d22bd49a7a609a1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/c8b48e843b323cd749dcb17b6b81c190e7882a43"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/c950a01794cf0983ebd62412976cb80756bf5dd0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/d456dfbc02f2f7d68be7c05d876bdaa086f9a5b5"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/commit/fc273f5157d3e96f147aa42773607d627d3b495f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.0.9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.1.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.2.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.3.8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.4.8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.0.11"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.1.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.2.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.3.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/supertokens/supertokens-core/security/advisories/GHSA-2pc4-vw9j-454c"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        },
        {
          "lang": "en",
          "value": "CWE-613"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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