blueprintue blueprintue-self-hosted-edition up to 4.1.x Password Change /profile/{slug}/edit/ current_password unverified password change

Summaryinfo

A vulnerability identified as critical has been detected in blueprintue blueprintue-self-hosted-edition up to 4.1.x. The impacted element is an unknown function of the file /profile/{slug}/edit/ of the component Password Change Handler. Performing a manipulation of the argument current_password results in unverified password change. This vulnerability was named CVE-2026-40588. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in blueprintue blueprintue-self-hosted-edition up to 4.1.x. This affects some unknown functionality of the file /profile/{slug}/edit/ of the component Password Change Handler. The manipulation of the argument current_password with an unknown input leads to a unverified password change vulnerability. CWE is classifying the issue as CWE-620. When setting a new password for a user, the product does not require knowledge of the original password, or using another form of authentication. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, the password change form at /profile/{slug}/edit/ does not include a current_password field and does not verify the user's existing password before accepting a new one. Any attacker who obtains a valid authenticated session — through XSS exploitation, session sidejacking over HTTP, physical access to a logged-in browser, or a stolen "remember me" cookie — can immediately change the account password without knowing the original credential, resulting in permanent account takeover. This vulnerability is fixed in 4.2.0.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-40588 since 04/14/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1552 according to MITRE ATT&CK.

Upgrading to version 4.2.0 eliminates this vulnerability.

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Productinfo

Vendor

• blueprintue

Name

• blueprintue-self-hosted-edition

Version

• 4.0
• 4.1

Website

• Product: https://github.com/blueprintue/blueprintue-self-hosted-edition/

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