Vulnerability in Supertokens Supertokens-Core
CVE-2026-123799
SuperTokens Core is an open source authentication server. From 11.0.0 until 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, and 12.1.2, Dashboard.isValidUserSession treats any stored session row as valid without comparing DashboardSessionInfo.expiry to the current time. DashboardQueries.getSessionInfoWithSessionId also selects by app and session identifier without an expiry predicate, leaving the periodic DeleteExpiredDashboardSessions cleanup as the only expiration enforcement. An attacker who obtains a dashboard administrator session after its 30-day lifetime can continue using POST /recipe/dashboard/session/verify until the row is removed, and frequent Core restarts can prevent the 12-hour cleanup sweep from running. The stale session retains full dashboard read and write access, but the flaw does not provide a way to guess or acquire the random session identifier. This issue is fixed in versions 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, and 12.1.2.
Published .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Supertokens Supertokens-Core — versions >= 11.0.0, < 11.0.9, >= 11.1.0, < 11.1.4, >= 11.2.0, < 11.2.4
Weakness classification (CWE)
References
- https://github.com/supertokens/supertokens-core/security/advisories/GHSA-w9fp-wv6g-pqv8
- https://github.com/supertokens/supertokens-core/pull/1409
- https://github.com/supertokens/supertokens-core/commit/0f4817152278b39fbf21b97c3795b4fc68c12c38
- https://github.com/supertokens/supertokens-core/commit/4b315b2382c8eec2cde28fbda113597bffad8da5
- https://github.com/supertokens/supertokens-core/commit/699d806b5fc77ee6343f8e48e0769dce8049b078
- https://github.com/supertokens/supertokens-core/commit/8906b840669b28b3af7367cf18870db0044d0d18
- https://github.com/supertokens/supertokens-core/commit/bd8eb93001cf814a8065e8f3cea755af267bc308
- https://github.com/supertokens/supertokens-core/commit/ced1c913d53641e5eb8108caef110e55348b5401
- https://github.com/supertokens/supertokens-core/commit/da0ec91d20ecbb68730741f8b0dec8c986b68877
- https://github.com/supertokens/supertokens-core/commit/e72793ec5bd925fd3b9ff19328043dc2a03201bd
Frequently asked questions
- What is CVE-2026-123799?
- CVE-2026-123799 is a high-severity vulnerability in Supertokens Supertokens-Core, classified under Insufficient Session Expiration. CVSS score: 7.4/10. Published 2026-11-09.
- How severe is CVE-2026-123799?
- High severity. CVSS v3 base score is 7.4 out of 10.