CVE-2022-51020
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.
Does this matter?
Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 6.0 MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.14% probability · 4th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-352
- Source
- disclosure@vulncheck.com
EPSS moved from 0.1% on 13 October 2026 to 0.1% on 26 October 2026.
References
- https://github.com/mher/flower
- https://github.com/mher/flower/blob/v2.1.0/flower/api/control.py#L25-L27
- https://github.com/mher/flower/commit/3b2115af7f9c42bd2da2fbcbd919f77013e9ec51
- https://github.com/mher/flower/commit/a14408b16cc3d2877d36659005ce0d72b6162629
- https://github.com/mher/flower/issues/1217
- https://www.vulncheck.com/advisories/flower-before-2.2.0-csrf-via-worker-and-task-control-api-endpoints
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.