Vulnerability · Published Apr 21, 2026 · Assigned by GitHub_M
CVE-2026-40588blueprintUE: Authenticated Password Change Does Not Verify Current Password
High 8.1
In plain English
A high-severity security flaw in blueprintue-self-hosted-edition from blueprintue. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| blueprintue | blueprintue-self-hosted-edition | < 4.2.0 |
Weakness: CWE-620 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N