# CVE-2026-42281: MagicMirror²: Unauthenticated SSRF via /cors endpoint

> Unauthenticated attackers can force the server to make arbitrary HTTP requests and exfiltrate secrets via environment variable expansion in the /cors endpoint.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 May 2026
- **Updated:** 14 May 2026
- **Also known as:** GHSA-ph6f-2cvq-79hq

## What is CVE-2026-42281?

CVE-2026-42281 is a critical server-side request forgery vulnerability in MagicMirrorOrg MagicMirror, published on 14 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

MagicMirror² is an open source modular smart mirror platform. Prior to 2.36.0, an unauthenticated Server-Side Request Forgery (SSRF) vulnerability in the /cors endpoint allows any remote attacker to force the MagicMirror² server to perform arbitrary HTTP requests to internal networks, cloud metadata services, and localhost services. The endpoint also expands environment variable placeholders (**VAR_NAME**), enabling exfiltration of server-side secrets. This vulnerability is fixed in 2.36.0.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-42281?

2 open source packages ship an affected version, including magicmirror. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `magicmirror` | npm | All versions | 2.36.0 |
| `magicmirror` | npm | All versions | 2.36.0 |

Products: Magicmirror Magicmirror.

## How do I fix CVE-2026-42281?

Upgrade magicmirror to 2.36.0 or later.

## Is CVE-2026-42281 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42281 exists.

Public exploit code:

- CVE-2026-42281 - MagicMirror <= 2.35.0 - Unauthenticated SSRF via /cors endpoint (github_poc): https://github.com/Astaruf/CVE-2026-42281
- MagicMirror <= 2.35.0 - Server-Side Request Forgery (nuclei): http/cves/2026/CVE-2026-42281.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-42281 and fix it if it is affected.

What it is: CVE-2026-42281 is a critical server-side request forgery vulnerability in MagicMirrorOrg MagicMirror, published on 14 May 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-2026-42281 exists.

Affected packages and fixed versions:
- magicmirror (npm): affected all versions; fixed in 2.36.0
- magicmirror (npm): affected all versions; fixed in 2.36.0

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-2026-42281/ (Markdown: https://insights.sbomify.com/CVE-2026-42281/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-42281
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-42281
- OSV: https://osv.dev/vulnerability/CVE-2026-42281

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-42281/
Summaries are generated and may contain mistakes; the official description above is the record.