Supertokens Core up to 11.3.5/11.4.5/12.0.7 API Key Enforcement WebserverAPI.java checkIPAccess/assertThatAPIKeyCheckPasses privileges management

Summaryinfo

A vulnerability classified as problematic has been found in Supertokens Core up to 11.3.5/11.4.5/12.0.7. This affects the function checkIPAccess/assertThatAPIKeyCheckPasses of the file src/main/java/io/supertokens/webserver/WebserverAPI.java of the component API Key Enforcement. Performing a manipulation results in privileges management. This vulnerability is known as CVE-2026-123797. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Supertokens Core up to 11.3.5/11.4.5/12.0.7. This affects the function checkIPAccess/assertThatAPIKeyCheckPasses of the file src/main/java/io/supertokens/webserver/WebserverAPI.java of the component API Key Enforcement. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-123797 since 11/06/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 11.3.6, 11.4.6 or 12.0.8 eliminates this vulnerability.

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Productinfo

Vendor

• Supertokens

Name

• Core

Version

• 11.3.0
• 11.3.1
• 11.3.2
• 11.3.3
• 11.3.4
• 11.3.5
• 11.4.0
• 11.4.1
• 11.4.2
• 11.4.3
• 11.4.4
• 11.4.5
• 12.0.0
• 12.0.1
• 12.0.2
• 12.0.3
• 12.0.4
• 12.0.5
• 12.0.6
• 12.0.7

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CPE 2.2info

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