CVE-2026-81838 - Zip Slip path traversal in awsdac (diagram-as-code)

Bulletin ID: 2026-090-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/27/2026 13:00 PM PDT Description: awsdac (diagram-as-code) is a CLI tool that generates AWS architecture diagrams from YAML definitions, enabling version-controlled, code-driven diagramming. We identified CVE-2026-81838, a Zip Slip (path traversal) issue. When awsdac extracts a zip archive referenced by a ZipFile resource in a definition file, a crafted archive can write files outside the intended cache directory, to any path writable by the user running awsdac. Depending on the file writt...