CVE-2026-40585 HIGH

CVE-2026-40585: blueprintUE: Password Reset Tokens Have No Expiry Window

Vendor Blueprintue
Product blueprintue-self-hosted-edition
Weakness CWE-640 · Weak password recovery
Published April 21, 2026
Last update April 21, 2026

CVSS base score

7.4/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a password reset is initiated, a 128-character CSPRNG token is generated and stored alongside a password_reset_at timestamp. However, the token redemption function findUserIDFromEmailAndToken() queries only for a matching email + password_reset token pair — it does not check whether the password_reset_at timestamp has elapsed any maximum window. A generated reset token is valid indefinitely until it is explicitly consumed or overwritten by a subsequent reset request. This vulnerability is fixed in 4.2.0.

Key dates

02Disclosure timeline

April 21, 2026 CVE published
April 21, 2026 Record updated