CVE-2026-40585: Blueprintue Blueprintue-Self-Hosted-Edition

High severity, CVSS 7.4. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Blueprintue Blueprintue-Self-Hosted-Edition: before 4.2.0 (fixed in 4.2.0)

Published 2026-04-21. Last modified 2026-06-17.