CVE-2026-33664

Kestra 1.x (up to 1.3.3) is vulnerable to Stored Cross-Site Scripting in Markdown-based YAML flow metadata. The issue arises when user-supplied flow YAML fields—specifically description, inputs[].displayName, and inputs[].description—are rendered by Markdown.vue with html: true and then 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...