# CVE-2026-40585: blueprintUE: Password Reset Tokens Have No Expiry Window

> Attackers can use indefinitely valid password reset tokens to take over user accounts in blueprintUE self-hosted editions.

- **Severity:** High 7.4 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Apr 2026
- **Updated:** 21 Apr 2026
- **Also known as:** GHSA-qr65-6vp8-whjf

## What is CVE-2026-40585?

CVE-2026-40585 is a high-severity vulnerability in blueprintue-self-hosted-edition, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a password reset is initiated, a 128-character CSPRNG token is generated and stored alongside a password_reset_at timestamp. However, the token redemption function findUserIDFromEmailAndToken() queries only for a matching email + password_reset token pair — it does not check whether the password_reset_at timestamp has elapsed any maximum window. A generated reset token is valid indefinitely until it is explicitly consumed or overwritten by a subsequent reset request. This vulnerability is fixed in 4.2.0.

Weakness: CWE-640 (Weak Password Recovery Mechanism for Forgotten Password)

## Which versions are affected by CVE-2026-40585?


## How do I fix CVE-2026-40585?

No fix has been published for CVE-2026-40585 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-40585 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40585 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-40585 and fix it if it is affected.

What it is: CVE-2026-40585 is a high-severity vulnerability in blueprintue-self-hosted-edition, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40585 exists.

Affected product: blueprintue-self-hosted-edition. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-40585/ (Markdown: https://insights.sbomify.com/CVE-2026-40585/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-40585
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40585
- OSV: https://osv.dev/vulnerability/CVE-2026-40585

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-40585/
Summaries are generated and may contain mistakes; the official description above is the record.