CVE-2026-40588CWE-620

blueprintUE: Authenticated Password Change Does Not Verify Current Password

High · published April 21, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
30.2
In the wild
Unconfirmed
What it 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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00374 · 30.2th percentile
Weakness
CWE-620 · Unverified Password Change
Published
2026-04-21T17:12Z
EPSS history
Timeline
  • 21 APR 17:12Z
    blueprintUE: Authenticated Password Change Does Not Verify Current Password
    cvelistv5