---
title: "Security digest: February 9, 2026"
url: https://erroneo.us/security/2026-02-09/
description: "February 9, 2026 vulnerability digest: 4 critical advisories (npm, Go). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2026-02-09
date_modified: 2026-02-09
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: February 9, 2026

4 critical advisories.

## Take stock

- npm: 3 critical advisories ( @nyariv/sandboxjs , fuxa-server ). Check with npm audit (or: npm ls <package>) .
- Go: 1 critical advisory ( github.com/gofiber/fiber/v2 ). Check with govulncheck ./... .
- None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.

## Known exploited (CISA KEV)

None.

## Critical advisories

- [CVE-2026-25881](https://erroneo.us/security/cve/CVE-2026-25881/index.md) @nyariv/sandboxjs has host prototype pollution from sandbox via array intermediary (sandbox escape) — npm @nyariv/sandboxjs <= 0.8.30 → 0.8.31
- [CVE-2026-25938](https://erroneo.us/security/cve/CVE-2026-25938/index.md) FUXA Unauthenticated Remote Code Execution in Node-RED Integration — npm fuxa-server >= 1.2.8, < 1.2.11 → 1.2.11
- [CVE-2026-25939](https://erroneo.us/security/cve/CVE-2026-25939/index.md) FUXA Unauthenticated Remote Arbitrary Scheduler Write — npm fuxa-server >= 1.2.8, < 1.2.11 → 1.2.11
- [CVE-2025-66630](https://erroneo.us/security/cve/CVE-2025-66630/index.md) Fiber has an insecure fallback in utils.UUIDv4() / utils.UUID() — predictable / zero‑UUID on crypto/rand failure — Go github.com/gofiber/fiber/v2 < 2.52.11 → 2.52.11

---
Source page: https://erroneo.us/security/2026-02-09/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt