---
title: "Security digest: October 19, 2026"
url: https://erroneo.us/security/2026-10-19/
description: "October 19, 2026 vulnerability digest: 2 critical advisories (PyPI). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2026-10-19
date_modified: 2026-10-19
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: October 19, 2026

2 critical advisories.

## Take stock

- PyPI: 2 critical advisories ( mercury ). 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-2026-111058](https://erroneo.us/security/cve/CVE-2026-111058/index.md) Mercury: Unauthenticated Remote Code Execution via /api/kernels — PyPI mercury <= 3.2.5 → 3.2.6
- [CVE-2026-111057](https://erroneo.us/security/cve/CVE-2026-111057/index.md) Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass — PyPI mercury >= 3.0.0, <= 3.2.3 → 3.2.4

---
Source page: https://erroneo.us/security/2026-10-19/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt