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CVE-2026-123804

6.8 mediumEPSS 0.4%

Medium (6.8) in supertokens supertokens-core. EPSS 0.4% estimated probability of exploitation activity in the next 30 days.

On this page
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.

Severity

CVSS 3.1

6.8 medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS
0.4% estimated probability of exploitation activity in the next 30 days; 31st percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
CWEs
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)
CWE-613 Insufficient Session Expiration deprecated by MITRE see CWE-1463, CWE-1464
OWASP Top 10
A06:2025 Insecure Design, A07:2025 Authentication Failures
Published
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
supertokens-core>= 7.0.0, < 11.0.0
supertokens-core>= 11.0.0, < 11.0.9
supertokens-core>= 11.1.0, < 11.1.4
supertokens-core>= 11.2.0, < 11.2.4
supertokens-core>= 11.3.0, < 11.3.8
supertokens-core>= 11.4.0, < 11.4.8
supertokens-core>= 12.0.0, < 12.0.11
supertokens-core>= 12.1.0, < 12.1.2
supertokens-core>= 12.2.0, < 12.2.1
supertokens-core>= 12.3.0, < 12.3.1

Attack patterns (CAPEC)

  • CAPEC-26 Leveraging Race Conditions Likelihood: High · Severity: High
  • CAPEC-29 Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions Likelihood: High · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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