CVE-2026-27949 LOW

CVE-2026-27949: Plane Exposes User Email (PII and part of credential) in GET Parameter

Vendor Makeplane
Product plane
Weakness CWE-200 · Info exposure
Published April 7, 2026
Last update April 8, 2026

CVSS base score

2.0/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction Required
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 7, 2026 CVE published
April 8, 2026 Record updated