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Security News — 20 August 2026

A daily, automatically-compiled digest of the cyber security stories that broke in the last 24 hours, drawn from 10 trusted feeds. Each entry is a short excerpt — follow the link to read the full article at its original publisher. Compiled 20 August 2026 · 18 items.

Top 5 to watch today

  1. CISA Adds One Known Exploited Vulnerability to Catalog exploited CISA Current Activity
  2. Hackers Compromised 14,500+ Dahua Devices Using Credential Attacks, Auth Bypasses, and P2P The Hacker News
  3. Rogue ransomware affiliate poses as recovery firm to steal payments BleepingComputer
  4. Healthtech firm CareCloud data breach impacts 3.7 million patients BleepingComputer
  5. Cloudflare Workers Spectre Attack Leaks JWT From Co-Located Worker at 12 Bits/Second The Hacker News

Urgent Vulnerabilities 1

Actively exploited, critical, or high-severity flaws — patch or mitigate first.

CISA Current Activity20 Aug

CISA Adds One Known Exploited Vulnerability to Catalog

KEV · exploited
Exploited
Yes — CISA KEV
Product
MLflow MLflow
Impact
Server-side request forgery
Action
Patch per vendor / CISA KEV

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-64849 MLflow Server-Side Request Forgery Vulnerability This type of vulnerability is a frequent…

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Threat Activity 9

Malware, campaigns and adversary tradecraft.

Breaches & Incidents 4

Ransomware, data breaches and supply-chain events.

Research & Detection 2

Detection engineering, tooling and defensive analysis.

Policy & Commentary 2

Industry, executive and AI-security perspective.

Daniel Miessler20 Aug

I'm Worried About a Prompt Injection Worm

A honeycomb of small cells, one person at a screen in each, a purple filament threading cell to cell and turning each one cold while bundles are drawn out the bottom/images/prompt-injection-worm.webp/images/prompt-injection-worm.webp I thi…

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