# CVE-2021-26626: tobesoft XPLATFORM Arbitrary file execution Vulnerability

> Remote attackers can execute arbitrary commands via improper input validation in the execBrowser method of XPLATFORM.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Apr 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-33c7-f9jv-pmxj

## What is CVE-2021-26626?

CVE-2021-26626 is a high-severity command injection vulnerability in tobesoft Co.,Ltd XPLATFORM, published on 19 Apr 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Improper input validation vulnerability in XPLATFORM's execBrowser method can cause execute arbitrary commands. IF the second parameter value of the execBrowser function is ‘default’, the first parameter value could be passed to the ShellExecuteW API. The passed parameter is an arbitrary code to be executed. Remote attackers can use this vulnerability to execute arbitrary remote code.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2021-26626?

It affects 1 product.


Products: Tobesoft Xplatform.

## How do I fix CVE-2021-26626?

No fix has been published for CVE-2021-26626 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-26626 being exploited?

There is no known exploitation of CVE-2021-26626 in the wild and no public exploit code.

## Other vulnerabilities in tobesoft Co.,Ltd XPLATFORM

- [CVE-2021-26629](https://insights.sbomify.com/CVE-2021-26629/): tobesoft XPLATFORM Path Traversal Vulnerability (high 8.8)
- [CVE-2020-7866](https://insights.sbomify.com/CVE-2020-7866/): Tobesoft XPLATFORM Arbitrary Command Execution Vulnerability (high 8.8)
- [CVE-2020-7841](https://insights.sbomify.com/CVE-2020-7841/): TOBESOFT XPLATFORM arbitrary hta file execution vulnerability (high 8.8)
- [CVE-2020-7815](https://insights.sbomify.com/CVE-2020-7815/): Server-side request forgery in XPLATFORM (high 7.8)
- [CVE-2019-19162](https://insights.sbomify.com/CVE-2019-19162/): Use after free in XPLATFORM (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-26626 and fix it if it is affected.

What it is: CVE-2021-26626 is a high-severity command injection vulnerability in tobesoft Co.,Ltd XPLATFORM, published on 19 Apr 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-26626 in the wild and no public exploit code.

Affected product: tobesoft Co.,Ltd XPLATFORM. 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-2021-26626/ (Markdown: https://insights.sbomify.com/CVE-2021-26626/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-26626
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-26626
- OSV: https://osv.dev/vulnerability/CVE-2021-26626

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-26626/
Summaries are generated and may contain mistakes; the official description above is the record.