# CVE-2026-36958: Denial of service in n/a

> An attacker can crash the U-SPEED N300 router's web interface by flooding it with HTTP requests, requiring a manual reboot to restore service.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Apr 2026
- **Updated:** 5 Jul 2026
- **Also known as:** GHSA-rhr7-g23x-pqh9

## What is CVE-2026-36958?

CVE-2026-36958 is a high-severity denial of service vulnerability in n/a, published on 30 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A denial-of-service vulnerability exists in the U-SPEED N300 V1.0.0 wireless router. By sending a large number of concurrent HTTP requests to random or non-existent endpoints on the web management interface, an attacker can exhaust system resources in the embedded Boa HTTP server. This causes the router web interface to become unresponsive and may require manual reboot to restore normal operation.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-36958?

It affects 1 product.


Products: U-Speed N300 Firmware.

## How do I fix CVE-2026-36958?

No fix has been published for CVE-2026-36958 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-36958 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-36958 exists.

Public exploit code:

- https://github.com/kirubel-cve/CVE-2026-36958 (github_poc): https://github.com/kirubel-cve/CVE-2026-36958

## Other vulnerabilities in n/a

- [CVE-2026-36959](https://insights.sbomify.com/CVE-2026-36959/): Auth bypass in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-36958 and fix it if it is affected.

What it is: CVE-2026-36958 is a high-severity denial of service vulnerability in n/a, published on 30 Apr 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-2026-36958 exists.

Affected product: n/a. 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-2026-36958/ (Markdown: https://insights.sbomify.com/CVE-2026-36958/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-36958
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-36958
- OSV: https://osv.dev/vulnerability/CVE-2026-36958

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-36958/
Summaries are generated and may contain mistakes; the official description above is the record.