Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.16.0, there is a vulnerability in Nuclio Dashboard's project management API, allowing any authenticated user (without membership in the target project) to bypass OPA authorization checks on write paths (PUT /api/projects/{id}, DELETE /api/projects) and modify or delete any project along with all its associated resources (functions, API gateways, etc.). This issue has been patched in version 1.16.0.

Affected: Go: github.com/nuclio/nuclio

This vulnerability exists in Nuclio Dashboard's project management API, allowing any authenticated user (without membership in the target project) to bypass OPA authorization checks on write paths (`PUT /api/projects/{id}`, `DELETE /api/projects`) and modify or delete any project along with all its associated resources (functions, API gateways, etc.). CWE classification: CWE-862 (Missing Authorization).

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## Summary

Nuclio Dashboard correctly enforces OPA-based authorization on the project read path (`GET /api/projects`), populating `MemberIds` in `PermissionOptions` so OPA can filter results by user membership. However, the write paths (`PUT /api/projects/{id}` and `DELETE /api/projects`) construct `PermissionOptions` without setting `MemberIds`. The platform-layer `FilterProjectsByPermissions` function (`pkg/platform/abstract/platform.go:652`) short-circuits when `MemberIds` is empty, bypassing OPA entirely. Any authenticated user who knows a project name can modify or delete that project, triggering cascading deletion of all associated Functions, APIGateways, and FunctionEvents.

Affected: Nuclio v1.15.26 (latest Helm release) and HEAD commit e185454 (latest source).

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## Attacker Model

**Attacker type**: Authenticated low-privilege tenant (no membership in the target project)

**Initial access**: - Holds any valid Nuclio Dashboard credentials - The account has no membership in the target project (OPA correctly denies `GET /api/projects`, returning an empty list…