---
title: "Security digest: October 22, 2026"
url: https://erroneo.us/security/2026-10-22/
description: "October 22, 2026 vulnerability digest: 5 critical advisories (PyPI, npm). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2026-10-22
date_modified: 2026-10-22
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: October 22, 2026

5 critical advisories.

## Take stock

- npm: 4 critical advisories ( @sentry/nextjs , dompurify , next ). Check with npm audit (or: npm ls <package>) .
- PyPI: 1 critical advisory ( Pillow ). Check with pip-audit (or: pip show <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-2026-96639](https://erroneo.us/security/cve/CVE-2026-96639/index.md) Pillow multi-frame loaders can reuse stale native image storage after mode transitions — PyPI Pillow >= 11.0.0, < 13.0.0 → 13.0.0
- [CVE-2026-114139](https://erroneo.us/security/cve/CVE-2026-114139/index.md) Sentry-Javascript: Middleware Bypass when using Tunnel route — npm @sentry/nextjs >= 9.36.0, < 9.47.2 → 9.47.2; npm @sentry/nextjs >= 10.0.0-alpha.0, < 10.75.2 → 10.75.2; npm @sentry/nextjs >= 11.0.0-alpha.0, < 11.0.0-rc.1 → 11.0.0-rc.1
- [GHSA-cg2g-xh64-v4q7](https://erroneo.us/security/ghsa/GHSA-cg2g-xh64-v4q7/index.md) DOMPurify SAFE_FOR_TEMPLATES bypass: split template expressions survive in attached shadow root content on DOM output modes — npm dompurify >= 3.4.4, <= 3.4.16 → 3.4.17
- [GHSA-673q-mjm6-r5xr](https://erroneo.us/security/ghsa/GHSA-673q-mjm6-r5xr/index.md) Next.js: Unauthenticated Remote Code Execution in `use cache` functions returning typed arrays — npm next >= 16.0.0, <= 16.4.0 → 16.4.1
- [GHSA-2464-fhr4-w9xw](https://erroneo.us/security/ghsa/GHSA-2464-fhr4-w9xw/index.md) Next.js: Unauthenticated Remote Code Execution in Image Optimization API when SVG files are used — npm next >= 10.0.0, <= 15.5.27 → 15.5.28; npm next >= 16.0.0, <= 16.4.0 → 16.4.1

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Source page: https://erroneo.us/security/2026-10-22/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt