---
title: "Security digest: June 21, 2026"
url: https://erroneo.us/security/2026-06-21/
description: "June 21, 2026 vulnerability digest: 1 critical advisory (PyPI). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2026-06-21
date_modified: 2026-06-21
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: June 21, 2026

1 critical advisory.

## Take stock

- PyPI: 1 critical advisory ( crawl4ai ). 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-2026-56265](https://erroneo.us/security/cve/CVE-2026-56265/index.md) Crawl4AI: authentication bypass vulnerability due to a hardcoded default JWT signing key in the Docker API server — PyPI crawl4ai < 0.8.7 → 0.8.7

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Source page: https://erroneo.us/security/2026-06-21/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt