What is CVE-2026-123797?

CVE-2026-123797 is a high-severity vulnerability in Supertokens Supertokens-Core, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 7.5/10. Published 2026-11-09.

How severe is CVE-2026-123797?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Supertokens Supertokens-Core

CVE-2026-123797

SuperTokens Core is an open source authentication server. Prior to 11.3.6, 11.4.6, and 12.0.8, app-specific management requests using an unknown tenant path and an older supported cdi-version can bypass API-key and public-tenant enforcement. In src/main/java/io/supertokens/webserver/WebserverAPI.java, checkIPAccess and assertThatAPIKeyCheckPasses suppress TenantOrAppNotFoundException, while the later app-specific handler resolves app/public storage and the public-tenant guard applies only to CDI versions 5.0 and later. An unauthenticated caller able to reach the Core endpoint can therefore use PUT /ghosttenant/recipe/role and GET /ghosttenant/recipe/roles to create and enumerate application roles without a valid API key. This issue is fixed in versions 11.3.6, 11.4.6, and 12.0.8.

Published 2026-11-09.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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 < 11.3.6, >= 11.4.0, < 11.4.6, >= 12.0.6, < 12.0.8

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

References

Frequently asked questions

What is CVE-2026-123797?: CVE-2026-123797 is a high-severity vulnerability in Supertokens Supertokens-Core, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 7.5/10. Published 2026-11-09.
How severe is CVE-2026-123797?: High severity. CVSS v3 base score is 7.5 out of 10.