Kestra: SSRF via Pebble http() function allows unauthenticated access to internal services & cloud metadata

Summary The Pebble template engine's http function in Kestra OSS accepts user-controlled URLs without any validation, allowing Server-Side Request Forgery SSRF attacks. An unauthenticated attacker can import a malicious Flow YAML and execute it to access internal services, cloud metadata endpoint...

PT-2026-89215

Path Traversal in Flow ID File Operations Summary @openhop/server passes unsanitized HTTP route parameters directly to path.join when constructing filesystem paths for flow YAML files. An unauthenticated attacker who can reach the server can read arbitrary .yaml files accessible to the OpenHop...

CVE-2026-33664 Kestra Vulnerable to Stored Cross-Site Scripting via Flow YAML Fields

Kestra is an open-source, event-driven orchestration platform Versions up to and including 1.3.3 render user-supplied flow YAML metadata fields — description, inputs.displayName, inputs.description — through the Markdown.vue component instantiated with html: true. The resulting HTML is injected...

CVE-2026-33664 Kestra Vulnerable to Stored Cross-Site Scripting via Flow YAML Fields

Kestra is an open-source, event-driven orchestration platform Versions up to and including 1.3.3 render user-supplied flow YAML metadata fields — description, inputs.displayName, inputs.description — through the Markdown.vue component instantiated with html: true. The resulting HTML is injected...