What’s Vulnerable › Vulnerabilities
CVE-2026-27949: Plane Exposes User Email (PII and part of credential) in GET Parameter
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-07 · updated 2026-07-24
- Weakness: CWE-200
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.
Affected products
- makeplane plane: before 1.3.0 — fixed in 1.3.0
How to fix
Upgrade to a fixed version: makeplane plane 1.3.0. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-27949 or the next vulnerability affects your stack