CVE-2026-123799

HIGH
Published Nov 9, 2026 Modified Nov 12, 2026 CWE-613

Description

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.

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CVSS v3.1 Score

7.4
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0078
Probability of exploitation
0.56%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-613 CWE-613

References

Other References

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 https://github.com/supertokens/supertokens-core/pull/1409 https://github.com/supertokens/supertokens-core/releases/tag/v11.0.9

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.4 (HIGH).
How severe is CVE-2026-123799? +
CVE-2026-123799 has a CVSS v3.1 score of 7.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0078, placing it in the 1th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-123799? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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