Flower before 2.2.0 CSRF via Worker and Task Control API Endpoints

Flower before 2.2.0 contains a cross-site request forgery vulnerability because Tornado xsrf_cookies is disabled and the OAuth session cookie lacks SameSite. Attackers can lure authenticated users to malicious pages that POST to /api/worker/shutdown, /api/worker/pool/restart, or /api/task/revoke to shut down Celery workers, resize pools, and revoke tasks.

Flower, a web UI for the Celery Python RPC framework, all versions as of 05-02-2022 is vulnerable to an OAuth authentication bypass. An attacker could then access the Flower API to discover and invoke arbitrary Celery RPC calls or deny service by shutting down Celery task nodes.

Flower 0.9.3 has XSS via a crafted worker name. NOTE: The project author stated that he doesn't think this is a valid vulnerability. Worker name and task name aren’t user facing configuration options. They are internal backend config options and person having rights to change them already has full access

Flower 0.9.3 has XSS via the name parameter in an @app.task call. NOTE: The project author stated that he doesn't think this is a valid vulnerability. Worker name and task name aren’t user facing configuration options. They are internal backend config options and person having rights to change them already has full access