# CVE-2026-122139: blueprintUE Self-Hosted Edition before 4.3.3 Account Enumeration via Password Reset


- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 4 Nov 2026
- **Updated:** 9 Nov 2026
- **Also known as:** GHSA-6v33-jwgx-fxf7, GHSA-fwgq-c3c6-p67j

## What is CVE-2026-122139?

CVE-2026-122139 is a medium-severity vulnerability in blueprintue-self-hosted-edition, published on 4 Nov 2026. 

### Official description

blueprintUE Self-Hosted Edition before 4.3.3 contains an account enumeration vulnerability in ForgotPasswordMiddleware.php that allows unauthenticated attackers to identify registered email addresses. Attackers can compare password reset redirect targets for submitted emails, and failed lookups are never rate-limited, enabling unlimited enumeration attempts.

Weakness: CWE-204 (Observable Response Discrepancy)

## Which versions are affected by CVE-2026-122139?


## How do I fix CVE-2026-122139?

No fix has been published for CVE-2026-122139 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-122139 being exploited?

There is no known exploitation of CVE-2026-122139 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-122139 and fix it if it is affected.

What it is: CVE-2026-122139 is a medium-severity vulnerability in blueprintue-self-hosted-edition, published on 4 Nov 2026. 
Exploitation: There is no known exploitation of CVE-2026-122139 in the wild and no public exploit code.

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-2026-122139/ (Markdown: https://insights.sbomify.com/CVE-2026-122139/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-122139
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-122139
- OSV: https://osv.dev/vulnerability/CVE-2026-122139

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-122139/
Summaries are generated and may contain mistakes; the official description above is the record.