CVE Catalog

CVE-2026-40587

MediumCVSS 6.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.24%

15th percentile - higher than 15% of all known CVEs

Summary

In blueprintUE prior to 4.2.0, changing a password via the profile edit page or completing a password reset does not invalidate existing authenticated sessions. An attacker who has compromised a session retains full access until the session's natural expiry.

Risk Assessment

Compromised sessions remain active after a password change, allowing an attacker continued account access and complicating incident response.

Recommendation

Update blueprintUE to version 4.2.0 or later, which invalidates active sessions on password change or reset.

Related vulnerabilities

Original NVD description (English source)

blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a user changes their password via the profile edit page, or when a password reset is completed via the reset link, neither operation invalidates existing authenticated sessions for that user. A server-side session store associates userID → session; the current password change/reset flow updates only the password column in the users table and does not destroy or mark invalid any active sessions. As a result, an attacker who has already compromised a session retains full access to the account indefinitely — even after the legitimate user has detected the intrusion and changed their password — until the session's natural expiry time (configured as SESSION_GC_MAXLIFETIME, defaulting to 86400 seconds / 24 hours, with SESSION_LIFETIME=0 meaning persistent until browser close or GC, whichever is later). This vulnerability is fixed in 4.2.0.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS