CVE-2026-7723

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.

CVSS 4.0

5.5CVSS: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 3.1

7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS

0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-26)

CWEs

CWE-287, CWE-306

Published

2026-05-04

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Packages (OSV)

References

• https://gist.github.com/nedlir/f1ab8aa038aafbcc6beeef21fab1d74f
• https://github.com/PrefectHQ/prefect/
• https://github.com/PrefectHQ/prefect/commit/f8afecadf88ea5f73694dafa3a365b9d8fae1ad6
• https://github.com/PrefectHQ/prefect/pull/20372
• https://github.com/PrefectHQ/prefect/releases/tag/3.6.14

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