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.

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History

Tue, 21 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Description 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.
Title blueprintUE: Password Reset Tokens Have No Expiry Window
Weaknesses CWE-640
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-21T17:48:47.758Z

Reserved: 2026-04-14T13:24:29.476Z

Link: CVE-2026-40585

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2026-04-21T17:16:56.380

Modified: 2026-04-21T17:16:56.380

Link: CVE-2026-40585

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses