---
title: "Security digest: January 8, 2026"
url: https://erroneo.us/security/2026-01-08/
description: "January 8, 2026 vulnerability digest: 1 critical advisory (npm). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2026-01-08
date_modified: 2026-01-08
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: January 8, 2026

1 critical advisory.

## Take stock

- npm: 1 critical advisory ( @react-router/node , @remix-run/node , @remix-run/deno ). Check with npm audit (or: npm ls <package>) .
- 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-2025-61686](https://erroneo.us/security/cve/CVE-2025-61686/index.md) React Router has Path Traversal in File Session Storage — npm @react-router/node >= 7.0.0, <= 7.9.3 → 7.9.4; npm @remix-run/node <= 2.17.1 → 2.17.2; npm @remix-run/deno <= 2.17.1 → 2.17.2

---
Source page: https://erroneo.us/security/2026-01-08/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt