Crawl4AI: Arbitrary file write (symlink/TOCTOU) plus log and webhook-header injection in Docker server

Summary Three backward-compatible hardening fixes in the Docker API server. The headline issue is an arbitrary file write via the screenshot/PDF outputpath. 1. Arbitrary file write via outputpath symlink / TOCTOU primary POST /screenshot and POST /pdf accept an outputpath constrained to...

GHSA-F989-C77F-R2CQ Crawl4AI: LLM credential exfiltration in Docker server via request base_url and env: token resolution

Summary The Docker API server let a request control where LLM calls were sent and which environment variable an LLM token resolved from. Both could be abused to exfiltrate server-held secrets. The Docker API is unauthenticated by default. Vector 1 - attacker baseurl /md, /llm, and /llm/job accept...

GHSA-4QQR-VV2Q-CMR5 Crawl4AI: SSRF filter bypass in Docker server via IPv6 transition forms (NAT64 / 6to4 / unspecified / v4-mapped)

Summary The Docker API server's SSRF protection validatewebhookurl / validateurldestination in deploy/docker/utils.py used an explicit IPv4/IPv6 CIDR blocklist that missed several address families. An attacker could reach internal services and cloud metadata endpoints e.g. 169.254.169.254 despite...

Crawl4AI: Multiple Docker API Vulnerabilities - File Write, SSRF, Auth Bypass, XSS, JS Execution

Summary Multiple security vulnerabilities in the Crawl4AI Docker API server affecting endpoints for crawling, markdown/LLM extraction, screenshots, PDFs, webhooks, monitoring, JavaScript execution, and configuration. Vulnerabilities 1. Arbitrary File Write via /screenshot and /pdf CWE-22, CVSS 9....

Use of Hard-coded Credentials

Overview Crawl4AI is a 🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & scraper Affected versions of this package are vulnerable to Use of Hard-coded Credentials via the outputpath parameter, which allows arbitrary filesystem paths without validation. An attacker can overwrite or create files ...

GHSA-QXJP-W3PJ-48M7 Crawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker API

Summary The safeevalexpression function in the computed fields feature uses an AST validator that only blocks attributes starting with underscore. Python generator and frame object attributes giframe, fback, fbuiltins do NOT start with underscore, enabling a complete sandbox escape to achieve...

Crawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker API

Summary The safeevalexpression function in the computed fields feature uses an AST validator that only blocks attributes starting with underscore. Python generator and frame object attributes giframe, fback, fbuiltins do NOT start with underscore, enabling a complete sandbox escape to achieve...

PT-2026-51224

Name of the Vulnerable Software and Affected Versions Crawl4AI versions prior to 0.8.7 Description The Docker API server contains an authentication bypass issue caused by a hardcoded default JWT JSON Web Token signing key. A JWT is a compact, URL-safe means of representing claims to be transferre...

PT-2026-50165

Name of the Vulnerable Software and Affected Versions Crawl4AI versions prior to 0.8.8 Description The Docker API server contains a Server-Side Request Forgery SSRF flaw where the protection mechanisms in the validate webhook url and validate url destination functions used an incomplete IPv4/IPv6...

Crawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker API

The safeevalexpression function in the computed fields feature uses an AST validator that only blocks attributes starting with underscore. Python generator and frame object attributes giframe, fback, fbuiltins do NOT start with underscore, enabling a complete sandbox escape to achieve arbitrary...

CVE-2026-44850 Portainer: Bind-mount restriction bypass via HostConfig.Mounts

Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. From 2.33.0 to before 2.33.8, 2.39.2, and 2.41.0, Portainer offers an environment-level Disable bind mounts for...

SUSE SLES15 Security Update : zypper-docker (SUSE-SU-2026:1951-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1951-1 advisory. This update for zypper-docker fixes the following issues - CVE-2026-2808: github.com/hashicorp/consul: unvalidated user-supplied fi...

Security update for zypper-docker

This update for zypper-docker fixes the following issues CVE-2026-2808: github.com/hashicorp/consul: unvalidated user-supplied file paths can lead to arbitrary file reads through the Vault Kubernetes authentication provider bsc1259563. CVE-2026-33186: google.golang.org/grpc: authorization bypass...

Portainer missing authorization on Docker plugin endpoints, which allows host RCE

Summary Portainer enforces Role-Based Access Control RBAC on top of the Docker API. The proxy layer routes incoming Docker API requests to per-resource handlers containers, images, services, volumes, etc. that apply authorization checks. The Docker plugin management endpoints /plugins/ were not...

CVE-2026-42593

CVE-2026-42593 affects Gotenberg: multiple routes (merge, split, LibreOffice convert, chromium convert variants) improperly accept stampSource=pdf/stampExpression and watermarkSource=pdf/watermarkExpression from anonymous callers. If stampExpression or watermarkExpression points to a file path th...

DEBIAN-CVE-2026-23924

Zabbix Agent 2 Docker plugin does not properly sanitize the 'docker.containerinfo' parameters when forwarding them to the Docker daemon. An attacker capable of invoking Agent 2 can read arbitrary files from running Docker containers by injecting them via the Docker archive API...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal via the container query parameter in GET /api/beszel/containers/logs and GET /api/beszel/containers/info endpoints, which is passed without validation to the agent and interpolated directly into Docker API URLs. An...

CVE-2026-27734

Beszel is a server monitoring platform. Prior to version 0.18.2, the hub's authenticated API endpoints GET /api/beszel/containers/logs and GET /api/beszel/containers/info pass the user-supplied "container" query parameter to the agent without validation. The agent constructs Docker Engine API URL...

CVE-2026-27734

Beszel is a server monitoring platform. Before v0.18.2, the hub’s authenticated API endpoints GET /api/beszel/containers/logs and GET /api/beszel/containers/info pass the user-supplied container param to the agent without validation. The agent builds Docker Engine API URLs using fmt.Sprintf with ...

CVE-2026-27734 Beszel Vulnerable to Docker API Path Traversal via Unsanitized Container ID

Beszel is a server monitoring platform. Prior to version 0.18.2, the hub's authenticated API endpoints GET /api/beszel/containers/logs and GET /api/beszel/containers/info pass the user-supplied "container" query parameter to the agent without validation. The agent constructs Docker Engine API URL...