# CVE-2026-7027: D-Link DSL-2740R Wireless Setup Section cross site scripting

> Remote attackers can inject malicious scripts via the Wireless Network Name field in the D-Link DSL-2740R router's wireless setup section.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **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:** 26 Apr 2026
- **Updated:** 27 Apr 2026
- **Also known as:** GHSA-x85h-2g56-9544

## What is CVE-2026-7027?

CVE-2026-7027 is a medium-severity cross-site scripting vulnerability in D-Link DSL-2740R, published on 26 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A vulnerability was identified in D-Link DSL-2740R EU_01.15. Impacted is an unknown function of the component Wireless Setup Section. Such manipulation of the argument Wireless Network Name leads to cross site scripting. The attack can be executed remotely. The exploit is publicly available and might be used.

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-2026-7027?

It affects 1 product.


Products: Dlink Dsl-2740r Firmware.

## How do I fix CVE-2026-7027?

No fix has been published for CVE-2026-7027 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7027 being exploited?

There is no known exploitation of CVE-2026-7027 in the wild and no public exploit code.

## Other vulnerabilities in D-Link DSL-2740R

- [CVE-2021-29294](https://insights.sbomify.com/CVE-2021-29294/): Null dereference in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7027 and fix it if it is affected.

What it is: CVE-2026-7027 is a medium-severity cross-site scripting vulnerability in D-Link DSL-2740R, published on 26 Apr 2026. 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-2026-7027 in the wild and no public exploit code.

Affected product: D-Link DSL-2740R. 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-2026-7027/ (Markdown: https://insights.sbomify.com/CVE-2026-7027/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7027
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7027
- OSV: https://osv.dev/vulnerability/CVE-2026-7027

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7027/
Summaries are generated and may contain mistakes; the official description above is the record.