CVE-2026-7723

PrefectHQ prefect WebSocket Endpoint in missing authentication

State: Published
Severity: 6.9 Medium
Published: May 4, 2026
Updated: May 4, 2026
Reserved: May 3, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	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	VulDB
3.1	7.3 High	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	VulDB
3.0	7.3 High	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	VulDB
2.0	7.5 High	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-306 Missing Authentication
CWE-287 Improper Authentication

Affected Products

Product	Versions
prefectPrefectHQ	3.6.0Affected 3.6.1Affected 3.6.2Affected 3.6.3Affected 3.6.4Affected 3.6.5Affected 3.6.6Affected 3.6.7Affected 3.6.8Affected 3.6.9Affected 3.6.10Affected 3.6.11Affected 3.6.12Affected 3.6.13Affected 3.6.14Not affected

References

VDB-360899 | PrefectHQ prefect WebSocket Endpoint in missing authenticationvdb-entry
VDB-360899 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #807256 | PerfectHQ Perfect <=3.6.13 Missing Critical Step in Authenticationthird-party-advisory
https://gist.github.com/nedlir/f1ab8aa038aafbcc6beeef21fab1d74fexploit
https://github.com/PrefectHQ/prefect/pull/20372issue-trackingpatch
https://github.com/PrefectHQ/prefect/commit/f8afecadf88ea5f73694dafa3a365b9d8fae1ad6patch
https://github.com/PrefectHQ/prefect/releases/tag/3.6.14patch
https://github.com/PrefectHQ/prefect/product

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