CVE-2026-27949: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in makeplane plane
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.
AI Analysis
Technical Summary
Plane versions before 1.3.0 include a vulnerability in the authentication utility module where a user's email address is exposed in the URL query string during error handling. This occurs when an invalid magic code is submitted, causing the email to be included in the URL as a query parameter. Such exposure of PII via GET parameters can lead to unauthorized disclosure if URLs are logged or intercepted. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information) and CWE-598 (Information Exposure Through Query Strings in GET Request). The issue is resolved in Plane version 1.3.0.
Potential Impact
The impact is limited to the exposure of a user's email address in URLs during authentication error handling. This could allow unauthorized actors with access to logs, browser history, or network traffic to obtain users' email addresses. There is no indication of further compromise such as account takeover or data modification. The CVSS score is 2.0, reflecting low severity with limited confidentiality impact and no integrity or availability impact.
Mitigation Recommendations
Upgrade to Plane version 1.3.0 or later, where this vulnerability is fixed. Since the vulnerability is resolved in the updated version, applying this official fix is the recommended remediation. No additional mitigation steps are indicated.
CVE-2026-27949: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in makeplane plane
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Plane versions before 1.3.0 include a vulnerability in the authentication utility module where a user's email address is exposed in the URL query string during error handling. This occurs when an invalid magic code is submitted, causing the email to be included in the URL as a query parameter. Such exposure of PII via GET parameters can lead to unauthorized disclosure if URLs are logged or intercepted. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information) and CWE-598 (Information Exposure Through Query Strings in GET Request). The issue is resolved in Plane version 1.3.0.
Potential Impact
The impact is limited to the exposure of a user's email address in URLs during authentication error handling. This could allow unauthorized actors with access to logs, browser history, or network traffic to obtain users' email addresses. There is no indication of further compromise such as account takeover or data modification. The CVSS score is 2.0, reflecting low severity with limited confidentiality impact and no integrity or availability impact.
Mitigation Recommendations
Upgrade to Plane version 1.3.0 or later, where this vulnerability is fixed. Since the vulnerability is resolved in the updated version, applying this official fix is the recommended remediation. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-02-25T03:11:36.690Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5874b43e2781bad84eafd
Added to database: 4/7/2026, 10:38:03 PM
Last enriched: 4/7/2026, 10:38:12 PM
Last updated: 4/8/2026, 5:42:14 AM
Views: 6
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