---
title: "Security digest: December 5, 2025"
url: https://erroneo.us/security/2025-12-05/
description: "December 5, 2025 vulnerability digest: 1 CISA KEV addition (Meta); 1 critical advisory (PyPI). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2025-12-05
date_modified: 2025-12-05
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: December 5, 2025

1 known exploited (cisa kev) addition and 1 critical advisory.

## Take stock

- Do you run any of these? Meta React Server Components. They are being exploited in the wild (CISA KEV). Patch or mitigate if you do; CISA’s federal deadline is 2025-12-12.
- PyPI: 1 critical advisory ( langflow ). 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)

- [CVE-2025-55182](https://erroneo.us/security/cve/CVE-2025-55182/index.md) Meta React Server Components: Meta React Server Components Remote Code Execution Vulnerability (CISA due 2025-12-12)

## Critical advisories

- [CVE-2025-34291](https://erroneo.us/security/cve/CVE-2025-34291/index.md) Langflow CORS misconfiguration enables Account Takeover and RCE — PyPI langflow <= 1.6.9 → 1.7.0

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Source page: https://erroneo.us/security/2025-12-05/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt