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TI-2022-26708 Aliases CVE-2022-51020GHSA-xg8m-6cg7-cmf8

Flower CSRF via Worker and Task Control API Endpoints

Priority LOW 26CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Tampering
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-352.

Summary

Flower before 2.2.0 contains a cross-site request forgery flaw (CWE-352) because Tornado xsrf_cookies is disabled and the OAuth session cookie lacks SameSite. An attacker can lure an authenticated user to a malicious page that sends POST requests to the worker shutdown, pool restart and task revoke endpoints, shutting down Celery workers, resizing pools and revoking tasks.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00144 3rd percentileScored 2026-11-07
Fix Fixed flower (mher): 2.2.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
mherflowerbefore 2.2.02.2.0Patch availableCNA
  • flower Vendormher Affected before 2.2.0 Fixed in 2.2.0 Patch available CNA

Remediation

Upgrade mher flower to version 2.2.0 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA flower (mher) Fixed in 2.2.0

Timeline

  1. 2026-10-12 Threatist record created from CVE-2022-51020
  2. 2026-10-13 Alias added: GHSA-xg8m-6cg7-cmf8
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-16 CISA SSVC decision points changed

References

Patch 2

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences