[ CVE-2022-51020 · Published 12 Oct 2026 ]
Vulnerability in mher flower
CVSS 5.9
EPSS <1%No fix listed yet
[ Description ]Official description
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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ References ]References
- github.com/mher/flower
- github.com/mher/flower/blob/v2.1.0/flower/api/control.py
- github.com/mher/flower/commit/3b2115af7f9c42bd2da2fbcbd919f77013e9ec51
- github.com/mher/flower/commit/a14408b16cc3d2877d36659005ce0d72b6162629
- github.com/mher/flower/issues/1217
- www.vulncheck.com/advisories/flower-before-2.2.0-csrf-via-worker-and-task-control-api-e…