# CVE-2026-18615: GL-iNet GL-MT3000 wg-server.so Native Plugin glc wg-server.generate_publickey command injection

> Remote attackers can execute arbitrary commands on GL-iNet GL-MT3000 routers via the wg-server plugin's public key generation function.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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:** 3 Aug 2026
- **Updated:** 3 Aug 2026
- **Also known as:** GHSA-hh6h-4vwh-4vhf

## What is CVE-2026-18615?

CVE-2026-18615 is a critical command injection vulnerability in GL-iNet GL-MT3000, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was determined in GL-iNet GL-MT3000 up to 4.4.5. The affected element is the function wg-server.generate_publickey of the file /cgi-bin/glc of the component wg-server.so Native Plugin. Executing a manipulation of the argument private_key can lead to command injection. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-18615?


## How do I fix CVE-2026-18615?

No fix has been published for CVE-2026-18615 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-18615 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18615 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-18615 and fix it if it is affected.

What it is: CVE-2026-18615 is a critical command injection vulnerability in GL-iNet GL-MT3000, published on 3 Aug 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-2026-18615 exists.

Affected product: GL-iNet GL-MT3000. 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-2026-18615/ (Markdown: https://insights.sbomify.com/CVE-2026-18615/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-18615
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18615
- OSV: https://osv.dev/vulnerability/CVE-2026-18615

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-18615/
Summaries are generated and may contain mistakes; the official description above is the record.