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CVE-2026-7723— PrefectHQ prefect WebSocket Endpoint in missing authentication

Quick assessment

Affected

PrefectHQ prefect

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Prefect是Prefect开源的一款工作流编排工具，使开发人员能够构建、观察数据管道并对数据管道做出反应。 Prefect 3.6.13及之前版本存在授权问题漏洞，该漏洞源于WebSocket Endpoint组件中文件/api/events/in的未知功能存在身份验证缺失，攻击者可通过远程发起攻击。

CVSS 7.3 · High EPSS 0.71% · P53 Updated May 05, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 15

Vendor	Product	Version Range	Status
PrefectHQ	prefect	`3.6.0`	affected
		`3.6.1`	affected
		`3.6.2`	affected
		`3.6.3`	affected
		`3.6.4`	affected
		`3.6.5`	affected
		`3.6.6`	affected
		`3.6.7`	affected
… +7 more rows

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I. Basic Information for CVE-2026-7723

Vulnerability Information

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Vulnerability Title

PrefectHQ prefect WebSocket Endpoint in missing authentication

Source: CVE Program / CVE List V5

Vulnerability Description

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 f8afecadf88ea5f73694dafa3a365b9d8fae1ad6. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

关键功能的认证机制缺失

Source: CVE Program / CVE List V5

Vulnerability Title

Prefect 授权问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
PrefectHQ	prefect	3.6.0	`cpe:2.3:a:prefect:prefect::::::::`

II. Public POCs for CVE-2026-7723

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-7723

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Patches & Fixes for CVE-2026-7723 (3)

Proof of Concept for CVE-2026-7723 (1)

🔗 REPORT.md · GitHub Read full article exploit

Other References for CVE-2026-7723 (1)

🔗 GitHub - PrefectHQ/prefect: Prefect is a workflow orchestration framework for building resilient data pipelines in Python. · GitHub product

https://www.cve.org/CVERecord?id=CVE-2026-7723

Same Patch Batch · PrefectHQ · 2026-05-04 · 4 CVEs total

CVE-2026-7725	6.3 MEDIUM	PrefectHQ prefect GitRepository Pull storage.py argument injection
CVE-2026-7722	5.3 MEDIUM	PrefectHQ prefect Health Check API health endswith improper authentication
CVE-2026-7724	5.0 MEDIUM	PrefectHQ prefect Webhook/Notification validate_restricted_url toctou

IV. Related Vulnerabilities

Same product: prefect

Same vendor: PrefectHQ

Same weakness: CWE-306