# CVE-2026-1406: lcg0124 BootDo Host Header AccessControlFilter.java redirectToLogin

> Attackers can exploit an open redirect in BootDo's login filter via the Host header to bypass security controls.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 25 Jan 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-p8c3-hjrq-6xmx

## What is CVE-2026-1406?

CVE-2026-1406 is a medium-severity vulnerability in lcg0124 BootDo, published on 25 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability was determined in lcg0124 BootDo up to 5ccd963c74058036b466e038cff37de4056c1600. Affected by this vulnerability is the function redirectToLogin of the file AccessControlFilter.java of the component Host Header Handler. This manipulation of the argument Hostname causes open redirect. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2026-1406?


## How do I fix CVE-2026-1406?

No fix has been published for CVE-2026-1406 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1406 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1406 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1406 and fix it if it is affected.

What it is: CVE-2026-1406 is a medium-severity vulnerability in lcg0124 BootDo, published on 25 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1406 exists.

Affected product: lcg0124 BootDo. 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-2026-1406/ (Markdown: https://insights.sbomify.com/CVE-2026-1406/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1406
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1406
- OSV: https://osv.dev/vulnerability/CVE-2026-1406

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1406/
Summaries are generated and may contain mistakes; the official description above is the record.