# CVE-2026-1428: WellChoose｜Single Sign-On Portal System - OS Command Injection

> Authenticated attackers can inject arbitrary OS commands to execute code on the server hosting the WellChoose Single Sign-On Portal System.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Jan 2026
- **Updated:** 26 Jan 2026
- **Also known as:** GHSA-673g-gvq6-jf92

## What is CVE-2026-1428?

CVE-2026-1428 is a high-severity command injection vulnerability in WellChoose Single Sign-On Portal System, published on 26 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Single Sign-On Portal System developed by WellChoose has a OS Command Injection vulnerability, allowing authenticated remote attackers to inject arbitrary OS commands and execute them on the server.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-1428?

It affects 1 product.


Products: Wellchoose Single Sign-on Portal System.

## How do I fix CVE-2026-1428?

No fix has been published for CVE-2026-1428 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1428 being exploited?

There is no known exploitation of CVE-2026-1428 in the wild and no public exploit code.

## Other vulnerabilities in WellChoose Single Sign-On Portal System

- [CVE-2026-1427](https://insights.sbomify.com/CVE-2026-1427/): WellChoose｜Single Sign-On Portal System - OS Command Injection (high 8.7)
- [CVE-2026-1429](https://insights.sbomify.com/CVE-2026-1429/): WellChoose｜Single Sign-On Portal System - Reflected Cross-site Scripting (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1428 and fix it if it is affected.

What it is: CVE-2026-1428 is a high-severity command injection vulnerability in WellChoose Single Sign-On Portal System, published on 26 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-1428 in the wild and no public exploit code.

Affected product: WellChoose Single Sign-On Portal System. 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-2026-1428/ (Markdown: https://insights.sbomify.com/CVE-2026-1428/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1428
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1428
- OSV: https://osv.dev/vulnerability/CVE-2026-1428

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1428/
Summaries are generated and may contain mistakes; the official description above is the record.