# CVE-2026-3721: 1024-lab/lab1024 SmartAdmin Help Documentation HelpDocAddForm.java cross site scripting

> Attackers can inject malicious scripts into the Help Documentation module of SmartAdmin, potentially leading to code execution or account takeover.

- **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:** 8 Mar 2026
- **Updated:** 11 Mar 2026
- **Also known as:** GHSA-w9x3-7q6f-79x9

## What is CVE-2026-3721?

CVE-2026-3721 is a medium-severity cross-site scripting vulnerability in 1024-lab SmartAdmin, published on 8 Mar 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 weakness has been identified in 1024-lab/lab1024 SmartAdmin up to 3.29. The affected element is an unknown function of the file sa-base/src/main/java/net/lab1024/sa/base/module/support/helpdoc/domain/form/HelpDocAddForm.java of the component Help Documentation Module. This manipulation causes cross site scripting. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-3721?

It affects 1 product.


Products: Lab1024 Smartadmin.

## How do I fix CVE-2026-3721?

No fix has been published for CVE-2026-3721 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3721 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3721 exists.

## Other vulnerabilities in 1024-lab SmartAdmin

- [CVE-2026-3725](https://insights.sbomify.com/CVE-2026-3725/): Code injection in SmartAdmin (medium 5.3)
- [CVE-2026-3720](https://insights.sbomify.com/CVE-2026-3720/): 1024-lab/lab1024 SmartAdmin Notice notice-form-drawer.vue cross site scripting (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3721 and fix it if it is affected.

What it is: CVE-2026-3721 is a medium-severity cross-site scripting vulnerability in 1024-lab SmartAdmin, published on 8 Mar 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-2026-3721 exists.

Affected product: 1024-lab SmartAdmin. 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-2026-3721/ (Markdown: https://insights.sbomify.com/CVE-2026-3721/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3721
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3721
- OSV: https://osv.dev/vulnerability/CVE-2026-3721

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-3721/
Summaries are generated and may contain mistakes; the official description above is the record.