{"affected":[{"product":"supertokens-core","source":"CNA: GitHub_M","vendor":"supertokens","versions":[{"status":"affected","version":">= 7.0.0, < 11.0.0"},{"status":"affected","version":">= 11.0.0, < 11.0.9"},{"status":"affected","version":">= 11.1.0, < 11.1.4"},{"status":"affected","version":">= 11.2.0, < 11.2.4"},{"status":"affected","version":">= 11.3.0, < 11.3.8"},{"status":"affected","version":">= 11.4.0, < 11.4.8"},{"status":"affected","version":">= 12.0.0, < 12.0.11"},{"status":"affected","version":">= 12.1.0, < 12.1.2"},{"status":"affected","version":">= 12.2.0, < 12.2.1"},{"status":"affected","version":">= 12.3.0, < 12.3.1"}]}],"cveId":"CVE-2026-123804","cwes":["CWE-362","CWE-613"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.8,"severity":"medium","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1794250404985,"publishedAt":1794250404985,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/supertokens/supertokens-core/security/advisories/GHSA-2pc4-vw9j-454c"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/182b39454ac44649cdef22d87f296a38a0b1a602"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/378e1157dc26232a518d2c360ee60cf93c2fd8a2"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/5aec64aca6d765cde491658210e6922e291742fd"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/b1c569ed59fffe16c2f657da1754abcae47d2761"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/b44f1e1418206f411e541501c2e5b9b147add0d9"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/bb6d5f8d1b79770e3cc37f214ba94c3e36e9c3b8"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/c0b7f5eda20840f63f6b0f171d22bd49a7a609a1"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/c8b48e843b323cd749dcb17b6b81c190e7882a43"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/c950a01794cf0983ebd62412976cb80756bf5dd0"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/d456dfbc02f2f7d68be7c05d876bdaa086f9a5b5"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/commit/fc273f5157d3e96f147aa42773607d627d3b495f"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.0.9"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.1.4"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.2.4"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.3.8"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.4.8"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v12.0.11"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v12.1.2"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v12.2.1"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/supertokens/supertokens-core/releases/tag/v12.3.1"}],"remediation":[],"revision":"5e3f58a568beb017ffb8a10c36fedc4ee4f228a4c4455d60f8a31508bb5aa01f","sources":[{"modifiedAt":1794250404985,"name":"CNA: GitHub_M","retrievedAt":1794251341495,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123804"}],"ssvc":null,"status":"published","title":"SuperTokens Core: A session created concurrently with account unlink survives the unlink","updatedAt":1794251341495}