#vulnerability

8 tutorials tagged with "vulnerability"

CVE-2026-20896: The Gitea Docker Flaw That Takes One Header to Own Your Server

A critical Docker image default in Gitea lets attackers gain admin access with a single HTTP header. Here's how CVE-2026-20896 works, how to check if you're vulnerable, and how to fix it in five minutes.

docker

July 2026 Patch Emergency: 570 Microsoft Flaws, Fortinet Zero-Days, and SonicWall Exploits Hit at Once

Microsoft dropped 570 patches including three zero-days. CISA ordered federal agencies to patch Fortinet and SonicWall immediately. If you manage servers, this is not the week to skip patch Tuesday.

security

Critical Gitea Docker Vulnerability (CVE-2026-20896): Patch Your Self-Hosted Git Server Now

A CVSS 9.8 critical vulnerability in Gitea Docker images allows attackers to impersonate any user via reverse proxy misconfiguration. The flaw is under active exploitation. Here's how to check if you're affected and patch immediately.

docker

GhostLock CVE-2026-43499: 15-Year-Old Linux Root Exploit

GhostLock (CVE-2026-43499) is a use-after-free vulnerability in the Linux kernel that sat undetected for 15 years, allowing any local user to escalate to root with 97% reliability. Here's how to check and patch your servers.

security

Januscape: 16-Year-Old Linux KVM Flaw Allows VM Escape on Intel and AMD Systems

A newly disclosed vulnerability tracked as CVE-2026-53359 has been hiding in the Linux kernel's KVM hypervisor since 2010, allowing attackers to break out of virtual machines and execute code on the host. Here's what server administrators need to know and how to patch.

security

Argo CD Vulnerability Shows Why GitOps Infrastructure Must Be Treated as Tier Zero

A newly disclosed flaw in Argo CD's repo-server lets attackers manipulate Kubernetes deployments through the GenerateManifest gRPC endpoint. Here's what happened, how the exploit works, and how to lock down your GitOps pipeline.

devops

DirtyClone (CVE-2026-43503): What Linux Admins Need to Know and How to Mitigate Right Now

A newly disclosed kernel vulnerability in the packet cloning subsystem affects every major Linux distribution running kernel 6.1 through 6.12. Here's a practical mitigation guide with step-by-step instructions for Ubuntu, Debian, RHEL, and containerized environments.

security

Critical libssh2 Flaw (CVE-2026-55200): How to Check If Your Servers Are Affected and Patch Immediately

A public PoC is now circulating for CVE-2026-55200, a critical libssh2 vulnerability with a 9.2 CVSS score. Here's how to identify affected systems, verify your version, and apply the fix across your server fleet.

server-config