# CVE-2024-21798: Cross-site scripting in WMC-X1800GST-B

> A malicious admin can inject scripts that execute in another admin's browser, potentially compromising the router's web interface.

- **Severity:** Medium 4.8 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 28 Feb 2024
- **Updated:** 26 Nov 2024
- **Also known as:** GHSA-gh95-m6w6-g25c

## What is CVE-2024-21798?

CVE-2024-21798 is a medium-severity cross-site scripting vulnerability in ELECOM CO.,LTD. WMC-X1800GST-B, published on 28 Feb 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

ELECOM wireless LAN routers contain a cross-site scripting vulnerability. Assume that a malicious administrative user configures the affected product with specially crafted content. When another administrative user logs in and operates the product, an arbitrary script may be executed on the web browser. Note that WMC-X1800GST-B is also included in e-Mesh Starter Kit "WMC-2LX-B".

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2024-21798?

It affects 10 products.


Products: Elecom Wmc-X1800gst-B Firmware, Elecom Wrc-1167gs2-B Firmware, Elecom Wrc-1167gs2h-B Firmware, Elecom Wrc-1167gst2 Firmware, Elecom Wrc-2533gs2-B Firmware, Elecom Wrc-2533gs2-W Firmware, Elecom Wrc-2533gs2v-B Firmware, Elecom Wrc-2533gst2 Firmware, Elecom Wrc-G01-W Firmware, Elecom Wrc-X3200gst3-B Firmware.

## How do I fix CVE-2024-21798?

No fix has been published for CVE-2024-21798 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-21798 being exploited?

There is no known exploitation of CVE-2024-21798 in the wild and no public exploit code.

## Other vulnerabilities in ELECOM CO.,LTD. WMC-X1800GST-B

- [CVE-2024-23910](https://insights.sbomify.com/CVE-2024-23910/): Cross-site request forgery in WMC-X1800GST-B (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-21798 and fix it if it is affected.

What it is: CVE-2024-21798 is a medium-severity cross-site scripting vulnerability in ELECOM CO.,LTD. WMC-X1800GST-B, published on 28 Feb 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-21798 in the wild and no public exploit code.

Affected product: ELECOM CO.,LTD. WMC-X1800GST-B. 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-2024-21798/ (Markdown: https://insights.sbomify.com/CVE-2024-21798/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-21798
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-21798
- OSV: https://osv.dev/vulnerability/CVE-2024-21798

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-21798/
Summaries are generated and may contain mistakes; the official description above is the record.