What is CVE-2026-40587?

CVE-2026-40587 is a medium-severity vulnerability in Blueprintue Blueprintue-self-hosted-edition, classified under Insufficient Session Expiration. CVSS score: 6.5/10. Published 2026-04-21.

How severe is CVE-2026-40587?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Blueprintue Blueprintue-self-hosted-edition

CVE-2026-40587

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 authenti…

EPSS: 0.000 (11.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

Affected products

Blueprintue Blueprintue-self-hosted-edition — versions < 4.2.0

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-40587?: CVE-2026-40587 is a medium-severity vulnerability in Blueprintue Blueprintue-self-hosted-edition, classified under Insufficient Session Expiration. CVSS score: 6.5/10. Published 2026-04-21.
How severe is CVE-2026-40587?: Medium severity. CVSS v3 base score is 6.5 out of 10.