Is CVE-2026-123797 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-123797 being exploited in the wild.

How severe is CVE-2026-123797?

High severity, with a CVSS score of 7.5, published 9 November 2026.

Which products and versions are affected?

Supertokens Core before 11.3.6, 11.4.6, and 12.0.8.

Is there a fix for CVE-2026-123797?

Yes: fixed in 11.3.6, 11.4.6, 12.0.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-123797 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-123797?

Check whether you run Supertokens Core at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-123797: SuperTokens Core API key and tenant enforcement bypass

CVE-2026-123797 · Severity: high · CVSS 7.5 · Published 2026-11-09

SuperTokens Core is an open-source authentication server used to manage user sign-in and roles for applications. An attacker with network access to the Core endpoint can bypass API key and public-tenant security checks by using older protocol versions and unknown tenant identifiers, allowing unauthorized creation and enumeration of application roles without valid credentials.

Technologies: Supertokens Core. Vendors: Supertokens.

Quick answers

Is CVE-2026-123797 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-123797 being exploited in the wild.
How severe is CVE-2026-123797?: High severity, with a CVSS score of 7.5, published 9 November 2026.
Which products and versions are affected?: Supertokens Core before 11.3.6, 11.4.6, and 12.0.8.
Is there a fix for CVE-2026-123797?: Yes: fixed in 11.3.6, 11.4.6, 12.0.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-123797 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-123797?: Check whether you run Supertokens Core at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 11.3.6, 11.4.6, 12.0.8

Technical details

The vulnerability exists in WebserverAPI.java where checkIPAccess and assertThatAPIKeyCheckPasses suppress TenantOrAppNotFoundException errors during configuration lookups. When a request targets an unknown tenant path using an older supported CDI version, the public-tenant guard (enforced only in CDI 5.0+) is bypassed, permitting unauthenticated access to role management endpoints like PUT /ghosttenant/recipe/role and GET /ghosttenant/recipe/roles. An attacker must reach the Core endpoint directly and craft requests with incompatible protocol versions to exploit this flaw.

Affected products

SuperTokens Core before 11.3.6, 11.4.6, and 12.0.8

Timeline

2026-11-09: disclosed
2026-07-28: patched

References

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