#dos


CDN Tsunami Attack Abuses HTTP/3 Translation for Up to 350x DoS Amplification

Aug 20, 2026 // 14:49

Cybersecurity researchers have disclosed two denial-of-service (DoS) attacks that exploit how major content delivery networks (CDNs) convert client-facing HTTP/3 traffic into HTTP/1.1 requests to the […]

Six Proto6 Vulnerabilities in protobuf.js Expose Node.js Apps to RCE and DoS

Jun 10, 2026 // 10:20

Cybersecurity researchers have flagged half a dozen vulnerabilities in protobuf.js, a JavaScript and TypeScript implementation of Protocol Buffers (Protobuf), that, if successfully exploited, could result […]

CISA Adds Actively Exploited SolarWinds Serv-U DoS Flaw to KEV Catalog

Jun 6, 2026 // 11:48

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a high-severity security flaw impacting SolarWinds Serv-U multi-protocol file server software to its Known Exploited […]

New ‘HTTP/2 Bomb’ DoS attack crashes web servers in under a minute

Jun 4, 2026 // 00:37

A new denial-of-service (DoS) attack dubbed HTTP/2 Bomb can be launched from a single machine to take down web servers within seconds. The technique works […]

New HTTP/2 Bomb Vulnerability Allows Remote DoS on NGINX, Apache, IIS, Envoy & Cloudflare

Jun 3, 2026 // 11:39

Cybersecurity researchers have discovered a remote denial-of-service exploit that affects major web servers, including NGINX, Apache HTTPD, Microsoft IIS, Envoy, and Cloudflare Pingora. The vulnerability […]

18-year-old NGINX vulnerability allows DoS, potential RCE

May 14, 2026 // 20:57

An 18-year-old flaw in the NGINX open-source web server, discovered using an autonomous scanning system, can be exploited for denial of service and, under certain […]

New Cisco DoS flaw requires manual reboot to revive devices

May 7, 2026 // 00:37

Cisco released security updates to fix a Crosswork Network Controller (CNC) and Network Services Orchestrator (NSO) denial-of-service (DoS) vulnerability that requires manually rebooting targeted systems […]