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high advisory

Critical containerd CRI Vulnerability (CVE-2026-53488) Leads to Host-Root Command Execution

A critical vulnerability (CVE-2026-53488) exists in the containerd CRI plugin where image configuration `LABEL` instructions are propagated to containers without validation, allowing an attacker to inject and execute arbitrary commands with host-root privileges on the underlying host when a maliciously crafted container image is pulled and processed by specific plugins.

containerd < 1.7.33 +4 container container-runtime kubernetes rce supply-chain linux
2r 2t
high advisory

Arbitrary Host File Read via Symlink Following in containerd CRI Checkpoint Restore (CVE-2026-53489)

A high-severity vulnerability (CVE-2026-53489) in containerd's CRI plugin allows an unprivileged attacker to read arbitrary files on the host system by crafting a malicious checkpoint with a symlink that `containerd` follows during `container.log` restoration, enabling data exfiltration via `kubectl logs`.

containerd v2.1.0-2.1.8 +2 container kubernetes vulnerability data-exfiltration linux
3r 2t
critical advisory

Crawl4AI Unauthenticated RCE via Chromium Launch-Argument Injection

An attacker can achieve unauthenticated remote code execution (RCE) in Crawl4AI Docker deployments by injecting malicious Chromium launch arguments, such as `--utility-cmd-prefix` and `--no-zygote`, into the `browser_config.extra_args` field of the API request, allowing for arbitrary command execution as the container's runtime user.

crawl4ai RCE web-vulnerability Chromium container Docker Linux
3r 2t
high advisory

PraisonAI Authentication Bypass via PRAISONAI_CALL_AUTH=disabled

A high-severity authentication bypass vulnerability in PraisonAI versions prior to 4.6.61 allows unauthenticated attackers to invoke any registered agent by setting the `PRAISONAI_CALL_AUTH=disabled` environment variable, potentially leading to arbitrary code execution or system compromise.

praisonai web-vulnerability authentication-bypass api-exploitation misconfiguration container
2r 7t
medium advisory

Kubernetes Static Pod Manifest File Access

This rule detects Linux process executions that reference /etc/kubernetes/manifests in process arguments, which may indicate tampering with static pod manifests for persistence or privilege escalation in Kubernetes environments.

Elastic Defend +2 kubernetes container persistence privilege-escalation linux
3r 2t
high threat

Docker `PUT /containers/{id}/archive` Vulnerability Allows Host Root Code Execution

A vulnerability exists in Docker where a malicious container image can execute arbitrary code with host root privileges by exploiting the decompression of compressed archives uploaded via the `PUT /containers/{id}/archive` endpoint, tracked as CVE-2026-41567.

Docker +2 container rce privilege-escalation CVE-2026-41567
2r 1t
medium advisory

Curl or Wget Execution from Container Context

Detects execution of curl or wget from processes running inside OCI/runc-backed containers, potentially indicating ingress tool transfer or data exfiltration after a container breakout.

command-and-control execution container linux
2r 1t
high advisory

Kubectl Secrets Enumeration Across All Namespaces

The rule detects the use of the 'kubectl get secrets --all-namespaces' command, which enumerates secret resources across the entire Kubernetes cluster, potentially aiding credential discovery, privilege escalation, or lateral movement by attackers.

Elastic Defend +1 kubernetes container discovery credential-access
2r 2t
high advisory

Portainer Bind Mount Restriction Bypass via HostConfig.Mounts (CVE-2026-44850)

Portainer versions 2.33.0 through 2.33.7, 2.39.0 through 2.39.1, and 2.40.0 through 2.40.9 are vulnerable to CVE-2026-44850, a bind-mount restriction bypass via the `HostConfig.Mounts` array allowing regular users to mount host paths into containers and potentially compromise the host filesystem.

Portainer +2 privilege-escalation vulnerability container CVE-2026-44850
2r 1t
medium advisory

Leveraging Linux Cgroups for Threat Detection and Investigation

This brief outlines how Linux cgroups, a kernel feature for resource management, can be repurposed to provide valuable telemetry for detecting malicious processes, particularly in systemd, Docker, and Kubernetes environments, aiding in investigations of server compromises.

Red Hat Enterprise Linux +5 linux cgroups container kubernetes docker systemd threat-detection
2r
high advisory

Podman HyperV Machine Vulnerability Allows Arbitrary Code Execution with Administrator Privileges

A local attacker can exploit a vulnerability in Podman HyperV Machine to execute arbitrary program code with administrator privileges, leading to complete system compromise.

Podman HyperV Machine privilege-escalation container windows
2r 1t
high advisory

Distribution Toolkit Authentication Redirection Vulnerability (CVE-2026-33540)

A vulnerability in the distribution toolkit prior to 3.1.0 allows a malicious upstream registry or man-in-the-middle attacker to redirect authentication requests, potentially exposing upstream credentials.

CVE-2026-33540 authentication redirection container
2r 1t 1c
medium advisory

SSH Authorized Key File Modification Inside a Container

The rule detects the creation or modification of an authorized_keys file inside a container, a technique used by adversaries to maintain persistence on a victim host by adding their own public key(s) to enable unauthorized SSH access for lateral movement or privilege escalation.

container persistence lateral-movement privilege-escalation ssh
2r 4t
medium advisory

Suspicious Pod Creation in Kubernetes System Namespace

An attacker may deploy a pod within the kube-system namespace in Kubernetes to mimic legitimate system pods and evade detection.

Kubernetes pod kube-system container
2r 1t
medium advisory

Curl or Wget Execution from Container Context

This rule detects the execution of curl or wget from within runc-backed containers on Linux systems monitored by Auditd Manager, indicating potential ingress tool transfer or data exfiltration by attackers who have compromised the container.

Auditd Manager command-and-control execution container auditd linux
2r 2t
high advisory

Potential Privilege Escalation in Container via Runc Init

Detection of runc init child processes with root effective user and non-root login user ID, indicating potential container privilege escalation.

Auditd Manager container privilege-escalation linux
2r 1t
medium advisory

Suspicious Container Runtime CLI Execution

The rule detects execution of container runtime CLI tools (ctr, crictl, nerdctl) with arguments indicating container creation, command execution inside existing containers, image manipulation, or host filesystem mounting, potentially leading to container escape and privilege escalation.

Elastic Defend for Containers container execution privilege_escalation linux
3r 2t
high advisory

Nsenter to PID Namespace via Auditd

This rule detects nsenter executions that target a PID with a namespace target flag, a common pattern used to attach to the host init namespace from a container or session and run with host context, potentially escalating privileges.

privilege-escalation linux container
2r 1t
medium advisory

Kubelet API Connection Attempt to Internal IP

The rule detects network connection attempts to the Kubernetes Kubelet API ports 10250 and 10255 on internal IP ranges from Linux hosts, indicating potential lateral movement within container and cluster environments.

kubelet +2 kubernetes lateral-movement linux container
2r 2t
medium advisory

Container Runtime CLI Execution with Suspicious Arguments

Detects execution of container runtime CLI tools (ctr, crictl, nerdctl) with arguments indicating container creation, command execution inside existing containers, image manipulation, or host filesystem mounting, potentially leading to privileged container creation and unauthorized access to sensitive data.

Elastic Defend +1 container execution privilege-escalation linux
2r 2t
medium advisory

Unusual Process Connecting to Docker or Containerd Socket

An unusual process connecting to a container runtime Unix socket like Docker or Containerd can indicate an attacker attempting to bypass Kubernetes security measures for container manipulation.

Auditbeat +4 container privilege-escalation lateral-movement linux
2r 3t
high advisory

Potential Direct Kubelet Access via Process Arguments

Detection of potential direct Kubelet access via process arguments in Linux containers, which could lead to enumeration, execution, or lateral movement within the Kubernetes cluster.

Defend for Containers container kubelet kubernetes lateral-movement execution
2r 3t
medium advisory

Potential Kubeletctl Execution on Linux Hosts

This rule detects the execution of kubeletctl, a command-line tool used to interact with the Kubelet API, on Linux hosts, potentially leading to discovery and lateral movement within Kubernetes environments.

kubernetes kubeletctl container linux
2r 3t
high advisory

Nsenter Execution with Target Flag Inside Container

The rule detects nsenter executions from inside a monitored Linux container that include a namespace target flag (-t or --target), which can be abused to escape container isolation.

Defend for Containers container privilege-escalation linux
2r 1t
high advisory

Kubeletctl Execution Inside Container Detected

This rule detects the execution of kubeletctl inside a container, which can be used to enumerate the Kubelet API or other resources inside the container, potentially indicating lateral movement attempts within the pod.

Defend for Containers container kubeletctl lateral-movement execution
3r 3t
critical advisory

Gotenberg ExifTool Argument Injection via Metadata Values

Gotenberg version 8.30.1 and earlier is vulnerable to argument injection, where an unauthenticated attacker can inject arbitrary ExifTool pseudo-tags via newline characters in metadata values, leading to arbitrary file manipulation within the container filesystem.

Gotenberg <= 8.30.1 argument-injection vulnerability container
2r 1t