CVE-2026-40585CWE-640

blueprintUE: Password Reset Tokens Have No Expiry Window

High · published April 21, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
24.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00323 · 24.1th percentile
Weakness
CWE-640 · Weak Password Recovery Mechanism for Forgotten Password
Published
2026-04-21T17:09Z
EPSS history
Timeline
  • 21 APR 17:09Z
    blueprintUE: Password Reset Tokens Have No Expiry Window
    cvelistv5