---
title: "Security digest: September 26, 2025"
url: https://erroneo.us/security/2025-09-26/
description: "September 26, 2025 vulnerability digest: 1 critical advisory (npm). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2025-09-26
date_modified: 2025-09-26
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: September 26, 2025

1 critical advisory.

## Take stock

- npm: 1 critical advisory ( get-jwks ). 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-2025-59936](https://erroneo.us/security/cve/CVE-2025-59936/index.md) get-jwks: poisoned JWKS cache allows post-fetch issuer validation bypass — npm get-jwks <= 11.0.1 → 11.0.2

---
Source page: https://erroneo.us/security/2025-09-26/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt