CVE-2026-7723

HIGH 7.3

PrefectHQ prefect WebSocket Endpoint in missing authentication

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-306 CWE-287
Vendor	prefecthq
Product	prefect
Published	May 4, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

PrefectHQ / prefect

3.6.0 3.6.1 3.6.2 3.6.3 3.6.4 3.6.5 3.6.6 3.6.7 3.6.8 3.6.9 3.6.10 3.6.11 3.6.12 3.6.13

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/360899 vuldb.com: https://vuldb.com/vuln/360899/cti vuldb.com: https://vuldb.com/submit/807256 gist.github.com: https://gist.github.com/nedlir/f1ab8aa038aafbcc6beeef21fab1d74f github.com: https://github.com/PrefectHQ/prefect/pull/20372 github.com: https://github.com/PrefectHQ/prefect/commit/0d3ab3c2d3f9f98abfafdf7b9f6d4f8ed3925e40 github.com: https://github.com/PrefectHQ/prefect/releases/tag/3.6.14 github.com: https://github.com/PrefectHQ/prefect/

Credits

🔍 nedlir (VulDB User)