CVE-2026-7723

PrefectHQ prefect WebSocket Endpoint in missing authentication

Assigner: VulDB
Reserved: 03.05.2026 Published: 04.05.2026 Updated: 04.05.2026

A flaw has been found in PrefectHQ prefect up to 3.6.13. Affected is an unknown function of the file /api/events/in of the component WebSocket Endpoint. Executing a manipulation can lead to missing authentication. The attack may be performed from remote. The exploit has been published and may be used. Upgrading to version 3.6.14 is able to address this issue. This patch is called 0d3ab3c2d3f9f98abfafdf7b9f6d4f8ed3925e40. It is recommended to upgrade the affected component.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CVSS Score: 7.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CVSS Score: 7.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.0

CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C
CVSS Score: 7.5

Access Vector	Network	Confidentiality Impact	Partial
Access Complexity	Low	Integrity Impact	Partial
Authentication	None	Availability Impact	Partial

CVSS 2.0

Product Status

Vendor	PrefectHQ
Product	prefect
Versions	Version 3.6.0 is affected Version 3.6.1 is affected Version 3.6.2 is affected Version 3.6.3 is affected Version 3.6.4 is affected Version 3.6.5 is affected Version 3.6.6 is affected Version 3.6.7 is affected Version 3.6.8 is affected Version 3.6.9 is affected Version 3.6.10 is affected Version 3.6.11 is affected Version 3.6.12 is affected Version 3.6.13 is affected Version 3.6.14 is unaffected

Vendor

PrefectHQ

Product

prefect

Versions

Version 3.6.0 is affected
Version 3.6.1 is affected
Version 3.6.2 is affected
Version 3.6.3 is affected
Version 3.6.4 is affected
Version 3.6.5 is affected
Version 3.6.6 is affected
Version 3.6.7 is affected
Version 3.6.8 is affected
Version 3.6.9 is affected
Version 3.6.10 is affected
Version 3.6.11 is affected
Version 3.6.12 is affected
Version 3.6.13 is affected
Version 3.6.14 is unaffected

Credits

nedlir (VulDB User) reporter

References

Problem Types