# CVE-2026-2944: Tosei Online Store Management System ネット店舗管理システム HTTP POST Request monitor.php system os command injection

> Remote attackers can execute arbitrary OS commands via the DevId argument in monitor.php of the Tosei Online Store Management System.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Feb 2026
- **Updated:** 25 Feb 2026
- **Also known as:** GHSA-wh45-rv58-w5rc

## What is CVE-2026-2944?

CVE-2026-2944 is a medium-severity command injection vulnerability in Tosei Online Store Management System ネット店舗管理システム, published on 22 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A security flaw has been discovered in Tosei Online Store Management System ネット店舗管理システム 1.01. Affected is the function system of the file /cgi-bin/monitor.php of the component HTTP POST Request Handler. Performing a manipulation of the argument DevId results in os command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-2944?

It affects 1 product.


Products: Tosei-Corporation Online Store Management System.

## How do I fix CVE-2026-2944?

No fix has been published for CVE-2026-2944 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2944 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2944 exists.

## Other vulnerabilities in Tosei Online Store Management System ネット店舗管理システム

- [CVE-2026-1192](https://insights.sbomify.com/CVE-2026-1192/): Tosei Online Store Management System ネット店舗管理システム imode_alldata.php command injection (medium 6.9)
- [CVE-2024-7898](https://insights.sbomify.com/CVE-2024-7898/): Tosei Online Store Management System ネット店舗管理システム Backend default credentials (medium 6.9)
- [CVE-2024-7896](https://insights.sbomify.com/CVE-2024-7896/): Tosei Online Store Management System ネット店舗管理システム p1_ftpserver.php command injection (medium 5.3)
- [CVE-2024-7897](https://insights.sbomify.com/CVE-2024-7897/): Tosei Online Store Management System ネット店舗管理システム tosei_kikai.php command injection (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2944 and fix it if it is affected.

What it is: CVE-2026-2944 is a medium-severity command injection vulnerability in Tosei Online Store Management System ネット店舗管理システム, published on 22 Feb 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-2026-2944 exists.

Affected product: Tosei Online Store Management System ネット店舗管理システム. 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-2026-2944/ (Markdown: https://insights.sbomify.com/CVE-2026-2944/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2944
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2944
- OSV: https://osv.dev/vulnerability/CVE-2026-2944

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-2944/
Summaries are generated and may contain mistakes; the official description above is the record.