makeplane up to 1.2.x Authentication Utility auth.ts information disclosure

Summaryinfo

A vulnerability was found in makeplane plane up to 1.2.x. It has been rated as problematic. This affects an unknown part of the file packages/utils/src/auth.ts of the component Authentication Utility Module. Performing a manipulation results in information disclosure. This vulnerability is cataloged as CVE-2026-27949. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in makeplane plane up to 1.2.x. It has been classified as problematic. This affects an unknown function of the file packages/utils/src/auth.ts of the component Authentication Utility Module. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

Plane is an an open-source project management tool. Prior to 1.3.0, a vulnerability was identified in Plane's authentication flow where a user's email address is included as a query parameter in the URL during error handling (e.g., when an invalid magic code is submitted). Transmitting personally identifiable information (PII) via GET request query strings is classified as an insecure design practice. The affected code path is located in the authentication utility module (packages/utils/src/auth.ts). This vulnerability is fixed in 1.3.0.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-27949 since 02/25/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Additional levels of successful authentication are needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 1.3.0 eliminates this vulnerability.

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Productinfo

Vendor

• makeplane

Name

• plane

Version

• 1.0
• 1.1
• 1.2

Website

• Product: https://github.com/makeplane/plane/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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